CN114111108B

CN114111108B - Method and related device for evaluating energy supply capacity of medium-water source heat pump

Info

Publication number: CN114111108B
Application number: CN202111268313.1A
Authority: CN
Inventors: 李春宝; 刘奇央
Original assignee: Ganghua Energy Chuangke Shenzhen Co ltd; Ganghua Energy Investment Co ltd
Current assignee: Ganghua Energy Chuangke Shenzhen Co ltd; Ganghua Energy Investment Co ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2023-08-01
Anticipated expiration: 2041-10-28
Also published as: CN114111108A

Abstract

The embodiment of the application discloses an evaluation method and a related device for the energy capacity of a reclaimed water source heat pump, wherein the method comprises the following steps: acquiring system state information, wherein the system state information comprises energy supply information and load information of the reclaimed water source heat pump system; determining parameters to be evaluated according to the system state information; and determining an evaluation result of the energy capacity of the medium water source heat pump according to the parameters to be evaluated. According to the embodiment of the application, through evaluating the parameters influencing the evaluation result of the energy supply capacity of the reclaimed water source heat pump in the reclaimed water source heat pump system, the evaluation process of the energy supply capacity of the reclaimed water source heat pump can be managed in a programmed manner, and the accuracy of the evaluation result of the energy supply capacity of the reclaimed water source heat pump is improved.

Description

Method and related device for evaluating energy supply capacity of medium-water source heat pump

Technical Field

The invention relates to the field of energy, in particular to an evaluation method and a related device for energy supply capacity of a reclaimed water source heat pump.

Background

With the rapid development of economy, the energy pressure of China is increasingly increased, and the reclaimed water heat pump technology is gradually an effective means for relieving the energy pressure.

The technical principle of the medium water source heat pump is that secondary treatment effluent of a sewage treatment plant is used as a cold and heat source to supply cold or heat to buildings nearby the sewage treatment plant. When the medium water source heat pump technology is adopted for cooling or heating a building, the energy provided by the medium water source needs to be determined to meet the requirements of cooling or heating the building due to the influence of water source conditions, and then the energy supply capacity of the medium water source heat pump is determined. The current method is to estimate the energy provided by the medium water source according to the water source condition by a professional technician, and then to evaluate the energy capacity of the medium water source heat pump according to the estimation result and by combining the experience of the professional technician.

However, since the method is susceptible to human factors, a large deviation between the energy provided by the reclaimed water source and the energy required by the building may be generated, resulting in lower accuracy of the evaluation result of the reclaimed water source heat pump energy supply capability.

Disclosure of Invention

The embodiment of the application provides an evaluation method and a related device for the energy capacity of a reclaimed water source heat pump, aiming at realizing the evaluation process of the energy capacity of the reclaimed water source heat pump in programmed management and improving the accuracy of the evaluation result of the energy capacity of the reclaimed water source heat pump by evaluating parameters affecting the evaluation result of the energy capacity of the reclaimed water source heat pump in a reclaimed water source heat pump system.

In a first aspect, an embodiment of the present application provides a method for evaluating a capability of a reclaimed water source heat pump, which is applied to a reclaimed water source heat pump system, where the method includes:

acquiring system state information, wherein the system state information comprises energy supply information and load information of the reclaimed water source heat pump system;

determining parameters to be evaluated according to the system state information;

and determining an evaluation result of the energy capacity of the medium water source heat pump according to the parameters to be evaluated.

It should be understood that the above-mentioned reclaimed water source heat pump system uses reclaimed water as a cold source or a heat source, adopts the heat pump principle, and realizes the transfer from low-grade heat energy to high-grade heat energy by a small amount of high-grade electric energy input, and mainly comprises a water source extraction system, a water source heat pump unit and terminal heat dissipation equipment. The water source extraction system can be various water source extraction systems according to different types of extracted water sources, and the water source extraction system can be an earth surface water source extraction system or an underground water source extraction system by way of example; according to the difference of the water quality of the water body directly treated by the water source heat pump unit, the water source heat pump unit can be a sewage source heat pump unit or a reclaimed water source heat pump unit; according to different energy supply types, the terminal heat dissipation device can refer to different energy consumption devices, for example, in the case that the reclaimed water source heat pump system is used for supplying heat, the terminal heat dissipation device can be a radiator, a fan heater or a water floor heater, and in the case that the reclaimed water source heat pump system is used for supplying cold, the terminal heat dissipation device can be an air cooler, a condenser or an evaporator.

In the embodiment of the application, the method selects information influencing the evaluation result of the energy supply capacity of the water source heat pump from the system state information to form parameters to be evaluated by acquiring the system state information, and determines the evaluation result of the energy supply capacity of the water source heat pump according to the parameters to be evaluated. The information affecting the energy supply capacity of the reclaimed water source heat pump comprises energy supply information and load information of the reclaimed water source heat pump system. The parameter to be evaluated can be directly obtained through one or more pieces of information in the system state information, or can be obtained through processing one or more pieces of information in the system state information. According to the method, through evaluating one or more parameters affecting the evaluation result of the energy supply capacity of the reclaimed water source heat pump in the reclaimed water source heat pump system, the evaluation process of the energy supply capacity of the reclaimed water source heat pump is subjected to programmed management, and the accuracy of the evaluation result of the energy supply capacity of the reclaimed water source heat pump is improved.

In a possible implementation manner of the first aspect, determining the parameter to be evaluated according to the system state information includes:

determining any one or more of a reclaimed water conveying distance, a reclaimed water temperature, energy, a maximum energy consumption load and a reservoir volume according to the system state information;

The parameter to be evaluated includes any one or more of the reclaimed water conveying distance, the reclaimed water temperature, the energy, the maximum energy load and the reservoir volume.

It will be appreciated that the intermediate water delivery distance characterizes the length of the pipeline laid between the water intake or the water withdrawal and the energy station, the intermediate water temperature characterizes the temperature of the intermediate water in a time period corresponding to the maximum energy consumption load, the energy characterizes the energy provided by the intermediate water source heat pump system, the maximum energy consumption load characterizes the maximum energy that the intermediate water source heat pump system needs to satisfy, and the reservoir volume characterizes the amount of intermediate water that the reservoir in the intermediate water source heat pump system holds.

In this embodiment of the present application, when the above-mentioned reclaimed water transportation distance or the above-mentioned reclaimed water temperature is used as a parameter to be evaluated, the energy supply capability of the intermediate water source heat pump can be evaluated in terms of water source conditions, when the above-mentioned energy or the above-mentioned maximum energy load is used as a parameter to be evaluated, the energy supply capability of the intermediate water source heat pump can be evaluated in terms of operation of the intermediate water source heat pump system, and when the above-mentioned reservoir volume is used as a parameter to be evaluated, the energy supply capability of the intermediate water source heat pump can be evaluated in terms of equipment configuration of the intermediate water source heat pump system. Preferably, two or more of the reclaimed water conveying distance, the reclaimed water temperature, the energy, the maximum energy consumption load and the reservoir volume are used as parameters to be evaluated, so that the energy supply capacity of the reclaimed water source heat pump in comprehensive evaluation in multiple aspects can be realized, and the accuracy of the evaluation result of the energy supply capacity of the reclaimed water source heat pump is improved.

In a possible implementation manner of the first aspect, the determining, according to the parameter to be evaluated, an evaluation result of the energy capacity of the medium water source heat pump includes:

determining preset conditions corresponding to the parameters to be evaluated, wherein the preset conditions are used for determining an evaluation result of the energy supply capacity of the medium water source heat pump;

and under the condition that the parameter to be evaluated meets the preset condition, determining an evaluation result of the energy supply capacity of the medium-water source heat pump.

It may be understood that a correspondence exists between the parameter to be evaluated and the preset condition, where the correspondence may be a one-to-one correspondence or a non-one correspondence, and in an exemplary embodiment, one parameter to be evaluated may correspond to one preset condition or two or more preset conditions.

It should be appreciated that in the case where at least one parameter to be evaluated exists and the at least one parameter to be evaluated satisfies respective corresponding preset conditions, an evaluation result of the energy supply capacity of the water source heat pump may be determined. In particular, if one or more parameters to be evaluated in the at least one parameter to be evaluated cannot meet the respective corresponding preset conditions, the parameter to be evaluated cannot meet the preset conditions, and the medium water source heat pump energy supply scheme is abandoned.

In the embodiment of the application, the relation between the parameters to be evaluated and the evaluation results of the energy capacity of the medium water source heat pump is established by determining the preset conditions corresponding to the parameters to be evaluated, so that the process of determining the evaluation results of the energy capacity of the medium water source heat pump by the parameters to be evaluated is more accurate and visual.

In a possible implementation manner of the first aspect, the determining the preset condition corresponding to the parameter to be evaluated includes:

determining a conveying distance threshold according to the energy supply information, wherein the energy supply information comprises a rated conveying energy efficiency ratio and a conveying pipeline economic ratio friction resistance of the reclaimed water source heat pump system, and the conveying distance threshold represents the length of a longest pipeline paved between a water intake or a water return and an energy station;

and determining a first preset condition as that the reclaimed water conveying distance is smaller than or equal to the conveying distance threshold according to the reclaimed water conveying distance and the conveying distance threshold, wherein the preset condition comprises the first preset condition.

It can be understood that in the process of conveying reclaimed water by the reclaimed water source heat pump system, as the reclaimed water has the characteristic of constant water temperature, the temperature change of the reclaimed water is smaller, under the condition of overlong conveying distance of the reclaimed water, the energy loss caused by the temperature change of the reclaimed water is smaller, the energy supply effect of the reclaimed water source heat pump system cannot be greatly and negatively influenced, however, the reclaimed water source heat pump system consumes a certain amount of electric energy in the running process to maintain the normal work of the heat pump, and the overlong conveying distance can cause the electric energy consumed by the heat pump in the process of conveying the reclaimed water to be increased, so that the resource waste is caused.

In the embodiment of the application, through judging the intermediate water conveying distance, the load of the heat pump can be reduced by reducing the intermediate water conveying distance as far as possible under the condition that the energy supply effect of the intermediate water source heat pump system is not influenced, so that the electric energy consumed by the heat pump is reduced, and the waste of resources is reduced.

determining a reclaimed water temperature threshold, wherein the reclaimed water temperature threshold comprises a first temperature threshold and a second temperature threshold, the first temperature threshold represents the lowest temperature of reclaimed water under the condition that the reclaimed water source heat pump system is used for supplying heat, and the second temperature threshold represents the highest temperature of reclaimed water under the condition that the reclaimed water source heat pump system is used for supplying cold;

and determining a second preset condition according to the reclaimed water temperature and the reclaimed water temperature threshold value, wherein the reclaimed water temperature is greater than or equal to the first temperature threshold value under the condition of heat supply or is less than or equal to the second temperature threshold value under the condition of cold supply, and the preset condition comprises the second preset condition.

It should be understood that the heat in the reclaimed water is derived from the waste heat recovery in the sewage, and the temperature of the sewage or the reclaimed water can be affected by different degrees due to the difference of the environmental conditions around the sewage or the reclaimed water, and under the condition that the temperature of the sewage or the reclaimed water is too low or too high, the energy provided by the reclaimed water source heat pump system can not meet the requirements of a building, and even the reclaimed water source heat pump unit can not normally operate, so that the reclaimed water source heat pump system is paralyzed.

In this embodiment of the application, the first temperature threshold and the second temperature threshold are respectively used for judging the reclaimed water temperature under the conditions of heat supply and cold supply, so that risks caused by too low or too high reclaimed water temperature can be effectively reduced, and normal operation of the reclaimed water source heat pump system is ensured.

determining an energy threshold according to the energy supply information, wherein the energy supply information comprises a water taking and withdrawing temperature difference and an equipment energy efficiency ratio of the water source heat pump system, the water taking and withdrawing temperature difference represents a difference value between the water temperature at the water taking port and the water temperature at the water withdrawing port, and the energy threshold represents the minimum heat supply amount provided by the water source heat pump system;

and determining a third preset condition as that the energy is larger than or equal to the energy threshold according to the energy and the energy threshold, wherein the preset condition comprises the third preset condition.

It can be understood that after the sewage is subjected to secondary treatment of a sewage treatment plant, organic pollutants in the sewage are removed to obtain reclaimed water, but some sundries still exist in the reclaimed water, under the condition that the energy of a reclaimed water source heat pump system is too small, the pipe diameter of a reclaimed water conveying pipeline is too small, so that the sundries in the reclaimed water cause the blockage of the conveying pipeline, and the service life of the conveying pipeline can be shortened due to the accumulation of part of harmful sundries, so that the operation efficiency of the reclaimed water source heat pump system is reduced.

In the embodiment of the application, through the evaluation of the energy of the reclaimed water source heat pump system, the problems of blockage of a conveying pipeline and the like caused by too small energy of the reclaimed water source heat pump system can be effectively avoided, and the running efficiency of the reclaimed water source heat pump system is improved.

determining the maximum required energy corresponding to the maximum energy load according to the maximum energy load and the equipment energy efficiency ratio of the reclaimed water source heat pump system;

determining the maximum affordable energy according to the reclaimed water flow rate and the reclaimed water available temperature difference of the reclaimed water source heat pump system, wherein the maximum affordable energy represents the maximum energy of the reclaimed water source heat pump system in a time period corresponding to the maximum energy consumption load;

and determining a fourth preset condition as that the maximum required energy is smaller than or equal to the maximum affordable energy according to the maximum required energy and the maximum affordable energy, wherein the preset condition comprises the fourth preset condition.

It should be appreciated that in a water-in-water heat pump system, the energy extracted from the water supply is primarily used to supply heat or cool a building, and that in this process it is necessary to determine that the energy provided by the water-in-water heat pump system is sufficient to meet the heating or cooling requirements of the building.

In the embodiment of the application, the maximum required energy corresponding to the maximum energy consumption load is obtained, and the required energy is compared with the maximum bearable energy, so that whether the energy provided by the reclaimed water source heat pump system can meet the heating or refrigerating requirement of a building is determined, and the accuracy of the evaluation result of the energy supply capability of the reclaimed water source heat pump is improved.

acquiring the medium water quantity and the load water quantity of the medium water source heat pump system in the unit time period, wherein the sum of the unit time periods is the time period corresponding to the maximum energy consumption load;

determining the required volume of the reservoir according to the difference value between the sum of the water demands and the sum of the reclaimed water corresponding to the continuous unit time period when the water demand is larger than the reclaimed water;

determining the available volume of the reservoir according to the difference value between the sum of the water demands and the sum of the reclaimed water demands corresponding to the continuous unit time period with the water demand smaller than the reclaimed water;

and determining a fifth preset condition according to the reservoir demand volume and the reservoir available volume, wherein the reservoir demand volume is smaller than or equal to the reservoir available volume, the reservoir volume comprises the reservoir demand volume and the reservoir available volume, and the preset condition comprises the fifth preset condition.

It will be appreciated that the reservoir demand volume characterizes the amount of water that should be contained in the reservoir in order to meet the demand of the load in the water-in-water source heat pump system, and the reservoir usable volume characterizes the amount of water that is actually contained in the reservoir in the water-in-water source heat pump system. In the reclaimed water source heat pump system, when the reclaimed water amount provided by the reclaimed water source heat pump in a unit time period is larger than or equal to the water demand of the load in the same time period, surplus reclaimed water can be stored in a mode of additionally arranging a water storage tank, and when the reclaimed water amount provided by the reclaimed water source heat pump is smaller than or equal to the water demand of the load in the same time period, the reclaimed water in the water storage tank is used for meeting the load demand.

In this application embodiment, through calculating water source heat pump system in cistern demand volume and cistern available volume, judge whether can satisfy the energy demand of building under the circumstances of addding the cistern, improve water source heat pump system's flexibility.

In a second aspect, an embodiment of the present application provides an apparatus for evaluating a capability of a reclaimed water source heat pump, which is applied to a reclaimed water source heat pump system, where the apparatus includes:

the system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring system state information, and the system state information comprises energy supply information and load information of the reclaimed water source heat pump system;

A first determining unit, configured to determine a parameter to be evaluated according to the system state information;

and the second determining unit is used for determining the evaluation result of the energy capacity of the medium water source heat pump according to the parameters to be evaluated.

In a possible implementation manner of the second aspect, the first determining unit is further configured to determine any one or more of a reclaimed water conveying distance, a reclaimed water temperature, energy, a maximum energy consumption load, and a reservoir volume according to the system status information; the parameter to be evaluated includes any one or more of the reclaimed water conveying distance, the reclaimed water temperature, the energy, the maximum energy load and the reservoir volume.

In a possible implementation manner of the second aspect, the second determining unit is further configured to determine a preset condition corresponding to the parameter to be evaluated, where the preset condition is used to determine an evaluation result of the energy capability of the medium water source heat pump;

the second determining unit is further configured to determine an evaluation result of the energy supply capability of the medium-water source heat pump when the parameter to be evaluated meets the preset condition.

In a possible implementation manner of the second aspect, the second determining unit is further configured to determine a conveying distance threshold according to the energy supply information, where the energy supply information includes a rated conveying energy efficiency ratio and a conveying pipeline economic ratio friction of the reclaimed water source heat pump system, and the conveying distance threshold is indicative of a length of a longest pipeline laid between the water intake or the water outlet and the energy station;

The second determining unit is further configured to determine, according to the reclaimed water conveying distance and the conveying distance threshold, a first preset condition that the reclaimed water conveying distance is less than or equal to the conveying distance threshold, where the preset condition includes the first preset condition.

In a possible implementation manner of the second aspect, the second determining unit is further configured to determine a reclaimed water temperature threshold, where the reclaimed water temperature threshold includes a first temperature threshold and a second temperature threshold, where the first temperature threshold is indicative of a lowest temperature of reclaimed water in a case where the reclaimed water source heat pump system is used for heat supply, and the second temperature threshold is indicative of a highest temperature of reclaimed water in a case where the reclaimed water source heat pump system is used for cooling;

the second determining unit is further configured to determine, according to the reclaimed water temperature and the reclaimed water temperature threshold, that a second preset condition is that the reclaimed water temperature is greater than or equal to the first temperature threshold under a condition of heat supply or the reclaimed water temperature is less than or equal to the second temperature threshold under a condition of cold supply, where the preset condition includes the second preset condition.

In a possible implementation manner of the second aspect, the second determining unit is further configured to determine an energy threshold according to the energy supply information, where the energy supply information includes a water taking and withdrawing temperature difference and a device energy efficiency ratio of the water source heat pump system, the water taking and withdrawing temperature difference is indicative of a difference between a water temperature at the water intake and a water temperature at the water withdrawal, and the energy threshold is indicative of a magnitude of a minimum heat supply amount provided by the water source heat pump system;

The second determining unit is further configured to determine, according to the energy and the energy threshold, a third preset condition to be that the energy is greater than or equal to the energy threshold, where the preset condition includes the third preset condition.

In a possible implementation manner of the second aspect, the second determining unit is further configured to determine, according to the maximum energy consumption load and a device energy efficiency ratio of the reclaimed water source heat pump system, a maximum required energy corresponding to the maximum energy consumption load;

the second determining unit is further configured to determine a maximum sustainable energy according to a reclaimed water flow rate and a reclaimed water available temperature difference of the reclaimed water source heat pump system, where the maximum sustainable energy represents a maximum energy of the reclaimed water source heat pump system in a time period corresponding to the maximum energy load;

the second determining unit is further configured to determine, according to the maximum required energy and the maximum affordable energy, a fourth preset condition to be that the maximum required energy is less than or equal to the maximum affordable energy, where the preset condition includes the fourth preset condition.

In a possible implementation manner of the second aspect, the second determining unit is further configured to obtain a medium water amount and a load water amount of the reclaimed water source heat pump system in the unit time period, where a sum of the unit time periods is a time period corresponding to the maximum energy consumption load;

The second determining unit is further configured to determine a reservoir required volume according to a difference between a total water demand and a total water demand corresponding to the continuous unit time period in which the water demand is greater than the total water demand;

the second determining unit is further configured to determine an available volume of the reservoir according to a difference between a total water demand and a total water demand corresponding to the continuous unit time period in which the water demand is smaller than the total water demand;

and the second determining unit is further configured to determine, according to the reservoir demand volume and the reservoir available volume, a fifth preset condition that the reservoir demand volume is less than or equal to the reservoir available volume, the reservoir volume includes the reservoir demand volume and the reservoir available volume, and the preset condition includes the fifth preset condition.

In a third aspect, an embodiment of the present application provides an electronic device, including: a memory for storing a program; a processor for executing the program stored in the memory, where the processor performs the method according to any one of the possible implementation manners of the first aspect.

In a fourth aspect, embodiments of the present application provide a computer readable storage medium having a computer program stored therein, the computer program comprising program instructions which, when executed by a processor, perform a method as in any one of the possible implementations of the first aspect.

In a fifth aspect, embodiments of the present application provide a computer program product comprising: instructions or computer programs; the above instructions, or the above computer program, when executed, cause the method as in any one of the possible implementations of the first aspect to be implemented.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below.

Fig. 1 is a schematic diagram of an application scenario of energy supply of a medium water source heat pump according to an embodiment of the present application;

fig. 2 is a schematic diagram of another application scenario of medium water source heat pump energy supply provided in an embodiment of the present application;

fig. 3 is a flowchart of an evaluation method for energy capacity of a water source heat pump according to an embodiment of the present application;

FIG. 4 is a flow chart of another method for evaluating the energy capacity of a water-source heat pump according to an embodiment of the present application;

Fig. 5 is a schematic structural diagram of an evaluation device for the energy supply capability of a water source heat pump according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

The terms "first" and "second" and the like in the description, claims and drawings of the present application are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprising," "including," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion. Such as a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to the list of steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

In the present application, "at least one (item)" means one or more, "a plurality" means two or more, and "at least two (items)" means two or three or more, and/or "for describing an association relationship of an association object, three kinds of relationships may exist, for example," a and/or B "may represent: only a, only B and both a and B are present, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of (a) or a similar expression thereof means any combination of these items. For example, at least one (one) of a, b or c may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c".

In a specific implementation, the embodiment of the invention provides a method and a related device for evaluating the energy supply capability of a reclaimed water source heat pump, and in order to describe the scheme of the application more clearly, the following description will first introduce some matters related to the method for evaluating the energy supply capability of the reclaimed water source heat pump provided by the embodiment of the application.

Reclaimed water: the sewage treatment plant carries out secondary treatment on domestic sewage or industrial wastewater to obtain water with the quality between that of tap water and sewage after removing organic pollutants.

A reclaimed water source heat pump system: the energy supply system uses reclaimed water as a cold source or a heat source, adopts a heat pump principle, and realizes the transfer from low-grade heat energy to high-grade heat energy through the input of a small amount of high-grade electric energy. In order to facilitate understanding, the embodiment of the application provides a schematic diagram of an application scenario of energy supply of a medium water source heat pump, and refer to fig. 1.

As shown in fig. 1, the sewage channel 101 is a channel for draining sewage, and the sewage channel 101 may be a main channel, a sub-main channel, or other channels for draining sewage. The water-source heat pump unit 102 is a heat pump type air conditioner that uses water as a cold source or a heat source and can perform refrigeration cycle or heating cycle, and the water-source heat pump unit 102 may be a cold-hot wind type water-source heat pump unit or a cold-hot water type water-source heat pump unit. The refrigeration apparatus 103 is a refrigeration facility such as an air cooler, a condenser, an evaporator, etc. that keeps a living or produced space in a suitable cold state. The heating device 104 is a heating facility such as a radiator, a fan heater, or a floor heating for maintaining a living or produced space in a suitable thermal state. The water intake 105 is a sewage water intake point, and the water outlet 106 is a sewage water outlet point.

In the process of cooling, the reclaimed water source heat pump unit 102 obtains sewage from the sewage channel 101 through the water intake 105, processes the obtained sewage to obtain reclaimed water, and the reclaimed water is used as a cold source or a heat extraction source, absorbs heat discharged by the refrigeration equipment 103, and flows to the sewage channel 101 through the reclaimed water source heat pump unit 102. In the heating process, the water source heat pump unit 102 obtains sewage from the sewage channel 101 through the water intake 105, processes the obtained sewage to obtain water, uses the water as a heat source, extracts heat in the water and supplies the heat to the heating equipment 104 for use, and the water from which the heat is extracted flows to the sewage channel 101 through the water source heat pump unit 102.

Taking the temperature difference of the water to be removed: the difference between the temperature of the sewage or the reclaimed water flowing into the water intake and the temperature of the sewage or the reclaimed water flowing out of the water return port. For ease of understanding, the embodiment of the present application provides another application scenario schematic diagram of medium water source heat pump energy supply, referring to fig. 2.

As shown in fig. 2, the above-described water intake-withdrawal temperature difference represents a difference between the water temperature at the water intake port 204 and the water temperature at the water withdrawal port 205. The sewage channel 201 is the same as the sewage channel 101 in fig. 1, and the sewage pump 202 and the sewage treatment apparatus 203 are included in the aforementioned water source heat pump unit 102. The sewage pump 202 obtains sewage from the water intake 204, and the sewage is processed by the sewage processing equipment 203 to obtain reclaimed water and provide energy in the reclaimed water for a user to supply energy; after the user consumes the energy in the reclaimed water, the reclaimed water or intermediate water bearing the energy in the reclaimed water flows to the water withdrawal port 205 and finally merges into the sewage channel 201. When the water flows from the water intake 204 to the water outlet 205, the water temperatures at the water intake 204 and the water outlet 205 are measured by an instrument because of energy loss or energy supply to a user, and the water intake and water outlet temperature difference is obtained.

With the continuous development of social economy, the consumed energy sources in the aspects of air conditioning and hot water supply in China are obviously increased, and the concepts of energy conservation, consumption reduction, circular economy and scientific development gradually draw attention to the sewage industry.

The reclaimed water is obtained by secondary treatment of sewage, the water quality is between tap water and sewage, and the reclaimed water can be widely used as a new clean energy source in the aspects of air conditioner and hot water supply due to the advantages of stable water source, constant water temperature and the like; the reclaimed water source heat pump system is an energy supply system for refrigerating/heating circulation by taking reclaimed water as a cold and hot source, has the advantages of stable heat output, high conversion ratio of energy to heat and the like, and is an effective means for relieving energy pressure.

When the reclaimed water source heat pump system is used for supplying energy, the influence of the water source condition needs to be judged whether the energy provided by the reclaimed water source can meet the requirements of building refrigeration or heating. The current judging method is generally that a professional technician estimates the energy provided by the water source according to the water source condition, and then manually evaluates the energy supply capacity of the intermediate water source heat pump according to the estimation result. However, because of various estimation methods and the influence of human factors, the energy provided by the reclaimed water source and the energy required by the building may have larger deviation, so that the accuracy of the evaluation result of the energy supply capability of the reclaimed water source heat pump is lower.

In view of the above-mentioned problems, the embodiment of the present application provides a flowchart of a method for evaluating the energy supply capability of a water source heat pump, and refer to fig. 3.

As shown in fig. 3, the above method may include the steps of:

s301, acquiring system state information, wherein the system state information comprises energy supply information and load information of a water source heat pump system.

The system state information comprises energy supply information and load information of the reclaimed water source heat pump system, specifically, the energy supply information comprises temperature, pipeline length and equipment energy efficiency ratio, and the load information comprises time-by-time load, time-by-time water demand and maximum energy consumption load. The system state information may be raw data (or referred to as user data) obtained directly from the water source heat pump system, or may be derived data obtained by processing the raw data. In the above-mentioned water source heat pump system, the raw data may be time-by-time load information stored in a load library, temperature time-by-time change information stored in a resource condition library, or equipment information stored in an equipment library; the derived data may be maximum energy load information calculated from the time-by-time load information, reclaimed water available temperature difference information calculated from the temperature time-by-time change information, or time-by-time available temperature difference calculated from the time-by-time load information and the equipment information.

S302, determining parameters to be evaluated according to the system state information.

The parameter to be evaluated is information which is selected from the system state information and affects the evaluation result of the energy supply capacity of the water source heat pump, and the information is used for determining the evaluation result of the energy supply capacity of the water source heat pump. The process of determining the parameter to be evaluated may be directly obtained through one or more pieces of information in the system state information, or may be obtained through one or more pieces of information processing in the system state information.

In some alternative embodiments, step S302 may be to determine any one or more of a reclaimed water delivery distance, a reclaimed water temperature, energy, a maximum energy load, and a reservoir volume based on the system status information described above. Preferably, by using any two or more of the reclaimed water conveying distance, the reclaimed water temperature, the energy, the maximum energy consumption load and the reservoir volume as parameters to be evaluated, the energy supply capability of the reclaimed water source heat pump in comprehensive evaluation of a plurality of angles such as the water source condition, the operation of the reclaimed water source heat pump system, the equipment configuration of the reclaimed water source heat pump system and the like can be realized, and the accuracy of the evaluation result of the energy supply capability of the reclaimed water source heat pump is improved.

S303, determining an evaluation result of the energy capacity of the medium water source heat pump according to the parameters to be evaluated.

Because the above-mentioned parameter to be evaluated is information which is selected from the above-mentioned system state information and affects the evaluation result of the energy supply capability of the intermediate water source heat pump, and the evaluation angles determined by the different parameters to be evaluated are not necessarily the same, for example, the evaluation result of the energy supply capability of the intermediate water source heat pump determined according to the intermediate water temperature is the energy supply capability of the intermediate water source heat pump in the evaluation from the angle of the water source condition, and the evaluation result of the energy supply capability of the intermediate water source heat pump determined according to the reservoir volume is the energy supply capability of the intermediate water source heat pump in the evaluation from the angle of the equipment configuration.

In the embodiment of the application, through the evaluation of the parameters to be evaluated, the evaluation result of the energy supply capacity of the intermediate water source heat pump can be determined from a plurality of evaluation angles, so that the evaluation process of the energy supply capacity of the intermediate water source heat pump is subjected to programmed management, and the accuracy of the evaluation result of the energy supply capacity of the intermediate water source heat pump is improved.

In some alternative embodiments, step S303 may further include: and determining a preset condition corresponding to the parameter to be evaluated, and determining an evaluation result of the energy supply capacity of the medium-water source heat pump under the condition that the parameter to be evaluated meets the preset condition. In order to describe the above method in more detail, another flowchart of a method for evaluating the energy supply capacity of a water source heat pump is provided in the embodiment of the present application, and refer to fig. 4.

As shown in fig. 4, the above method may include the steps of:

s401, acquiring system state information, wherein the system state information comprises energy supply information and load information of a water source heat pump system.

Step S401 is the same as the execution process of step S301, and will not be described here.

S402, determining parameters to be evaluated according to the system state information.

Step S402 is the same as the execution process of step S302, and will not be described here.

S403, determining preset conditions corresponding to the parameters to be evaluated, wherein the preset conditions are used for determining an evaluation result of the energy supply capacity of the medium water source heat pump.

The parameters to be evaluated and the preset conditions have a corresponding relation, and the corresponding relation can be one-to-one or non-one. The preset conditions may be adjusted accordingly according to the change of the parameter to be evaluated, for example, in the case that a measurement unit of a specific parameter to be evaluated changes, the preset conditions corresponding to the parameter to be evaluated may be adjusted accordingly, so as to determine whether the parameter to be evaluated meets the corresponding preset conditions.

S404, determining an evaluation result of the energy supply capacity of the medium water source heat pump under the condition that the parameter to be evaluated meets the preset condition.

And under the condition that at least one parameter to be evaluated exists and the at least one parameter to be evaluated respectively meets the corresponding preset conditions, determining an evaluation result of the energy capacity of the water source heat pump. In particular, if one or more parameters to be evaluated in the at least one parameter to be evaluated cannot meet the respective corresponding preset conditions, the parameter to be evaluated cannot meet the preset conditions, and the medium water source heat pump energy supply scheme is abandoned.

In some alternative embodiments, the step S403 may include determining a preset condition corresponding to the medium water transport distance, and the method may include the steps of:

determining a conveying distance threshold according to the energy supply information, wherein the energy supply information comprises the rated conveying energy efficiency ratio and the economic ratio friction of a conveying pipeline of the reclaimed water source heat pump system;

And determining a first preset condition as that the reclaimed water conveying distance is smaller than or equal to the conveying distance threshold according to the reclaimed water conveying distance and the conveying distance threshold.

The energy supply information comprises rated conveying energy efficiency ratio and conveying pipeline economic ratio friction of the reclaimed water source heat pump system, the rated conveying energy efficiency ratio is the ratio between the maximum energy provided by the reclaimed water source heat pump unit and the electric quantity consumed by the reclaimed water source heat pump unit in unit time, and the conveying pipeline economic ratio friction is the friction resistance of the conveying pipeline in unit length under the condition that the total investment cost is minimum in a specified compensation period. The transportation distance threshold can be determined by combining the rated transportation energy efficiency ratio and the transportation pipeline economic ratio friction with the parameters of the estimated ratio of the local loss and the along-path loss of the energy transportation in the reclaimed water source heat pump system, the water pump efficiency, the average available temperature difference, the transportation energy efficiency ratio coefficient and the like. Wherein, the threshold value of the conveying distance is 446 meters through calculation in the step.

It may be appreciated that the foregoing preset conditions include the foregoing first preset condition, and if the foregoing intermediate water conveying distance meets the foregoing first preset condition, it is determined that the foregoing parameter to be evaluated meets the foregoing preset condition, and then step S404 is executed. And if the medium water conveying distance does not meet the first preset condition, determining that the conveying distance is too long to ensure that the unit cold and hot energy conveying pump consumes a large amount of energy and is uneconomical, wherein the parameter to be evaluated does not meet the preset condition, and abandoning the medium water source heat pump energy supply scheme.

In some alternative embodiments, the step S403 may include determining a preset condition corresponding to the temperature of the reclaimed water, and the method may include the steps of:

determining a reclaimed water temperature threshold, wherein the reclaimed water temperature threshold comprises a first temperature threshold and a second temperature threshold;

and determining a second preset condition as that the reclaimed water temperature is greater than or equal to the first temperature threshold under the condition of heat supply or less than or equal to the second temperature threshold under the condition of cold supply according to the reclaimed water temperature and the reclaimed water temperature threshold.

The first temperature threshold value characterizes a lowest temperature of the reclaimed water in the case that the reclaimed water source heat pump system is used for heat supply, and the second temperature threshold value characterizes a highest temperature of the reclaimed water in the case that the reclaimed water source heat pump system is used for cold supply. In particular, the first temperature threshold may be a lowest temperature of the reclaimed water source heat pump system in summer, and the second temperature threshold may be a highest temperature of the reclaimed water source heat pump system in winter. The reclaimed water temperature threshold value can be obtained by comparing the reclaimed water temperature threshold value with the temperature around the cooling tower, the first temperature threshold value is 5.5 ℃, and the second temperature threshold value is 33.5 ℃.

It can be understood that the aforementioned preset conditions include the aforementioned second preset condition, and if the aforementioned reclaimed water temperature satisfies the aforementioned second preset condition, it is determined that the parameter to be evaluated in the foregoing meets the aforementioned preset condition, and step S404 is performed. And under the condition that the reclaimed water temperature does not meet the second preset condition, determining that the reclaimed water temperature cannot meet the requirement of using reclaimed water as a cold and heat source for energy supply, and discarding the medium water source heat pump energy supply scheme when the parameter to be evaluated does not meet the preset condition.

In the embodiment of the application, through judging the temperature of the reclaimed water, whether the reclaimed water source has the condition for supplying energy to a user as a cold source or not can be judged in the process of deploying the reclaimed water source heat pump system, so that the risk that the reclaimed water source heat pump unit cannot work normally due to too low or too high temperature of the reclaimed water is effectively reduced, and the normal operation of the reclaimed water source heat pump system is ensured.

In some alternative embodiments, the step S403 may include determining a preset condition corresponding to the energy, and the method may include the steps of:

determining an energy threshold according to the energy supply information, wherein the energy supply information comprises a water withdrawal temperature difference and an equipment energy efficiency ratio of the reclaimed water source heat pump system;

And determining a third preset condition as energy greater than or equal to the energy threshold according to the energy and the energy threshold.

The energy supply information comprises the water taking and withdrawing temperature difference and the equipment energy efficiency ratio, wherein the water taking and withdrawing temperature difference is the difference between the temperature of the sewage or the reclaimed water flowing into the water taking port and the temperature of the sewage or the reclaimed water flowing out of the water withdrawing port, and the equipment energy efficiency ratio is the ratio between the energy provided by the reclaimed water source heat pump system and the electric quantity consumed by each equipment unit in the reclaimed water source heat pump system. The energy threshold can be determined by combining the draw-down temperature difference and the equipment energy efficiency ratio with the lowest flow rate, the smallest pipe diameter, the lowest flow rate, and the lowest available energy. Wherein the energy threshold is determined to be 143 kw by taking the pipe diameter with the minimum nominal diameter of 100 mm as a boundary.

It may be appreciated that the foregoing preset conditions include the third preset condition, and if the foregoing intermediate water conveying distance meets the third preset condition, it is determined that the foregoing parameter to be evaluated meets the foregoing preset condition, and step S404 is performed. And if the energy does not meet the third preset condition, determining that the energy is too small, and discarding the medium water source heat pump energy supply scheme if the parameter to be evaluated does not meet the preset condition.

In some alternative embodiments, the step S403 may include determining a preset condition corresponding to the maximum energy consumption load, and the method may include the steps of:

determining the maximum affordable energy according to the reclaimed water flow rate and the reclaimed water available temperature difference of the reclaimed water source heat pump system;

and determining a fourth preset condition as that the maximum required energy is smaller than or equal to the maximum affordable energy according to the maximum required energy and the maximum affordable energy.

The maximum energy consumption load is information obtained from the system state information, and the maximum energy demand is energy which the reclaimed water source heat pump system needs to supply when the maximum energy consumption load is satisfied.

In the case of heating, the calculation formula of the above maximum required energy may be:

In the case of cooling, the above calculation formula of the maximum required energy may be:

wherein the heating energy efficiency ratio and the cooling energy efficiency ratio are included in the aforementioned equipment energy efficiency ratio.

The maximum sustainable energy is the maximum energy of the medium water source heat pump system in the period corresponding to the maximum energy consumption load, and the calculation formula of the maximum sustainable energy in unit time may be:

maximum affordable energy = specific heat capacity of reclaimed water x flow of reclaimed water x temperature difference of reclaimed water availability

The above-mentioned reclaimed water available temperature difference can be obtained according to the above-mentioned reclaimed water temperature and the above-mentioned reclaimed water temperature threshold, specifically, under the condition that the above-mentioned first temperature threshold is 5.5 ℃ or the above-mentioned second temperature threshold is 33.5 ℃, the available temperature difference of reclaimed water under the heat supply condition can be expressed as:

the temperature difference of reclaimed water=reclaimed water temperature-5.5 DEG C

The available temperature difference of the reclaimed water under the cold supply working condition can be expressed as:

the available temperature difference of reclaimed water is 33.5-reclaimed water temperature

It may be appreciated that the foregoing preset conditions include the fourth preset condition, and if the maximum required energy satisfies the fourth preset condition, it is determined that the parameter to be evaluated in the foregoing process satisfies the preset condition, and step S404 is performed. Under the condition that the maximum required energy does not meet the fourth preset condition, determining that the energy provided by the reclaimed water source heat pump system cannot meet the heating or refrigerating requirement of a building, and discarding the reclaimed water source heat pump energy supply scheme when the parameter to be evaluated does not meet the preset condition.

In some alternative embodiments, the step S403 may include determining a preset condition corresponding to the volume of the reservoir, and the method may include the steps of:

acquiring the medium water quantity and the load water demand of the medium water source heat pump system in a unit time period;

and determining a fifth preset condition according to the required volume of the water storage tank and the available volume of the water storage tank, wherein the required volume of the water storage tank is smaller than or equal to the available volume of the water storage tank.

When the medium water amount and the water demand are acquired, the most unfavorable day may be determined first, and then the time-by-time water amount and the time-by-time water demand of the load for the most unfavorable day may be acquired. The most unfavorable day may be a day on which the maximum energy load is located, and the time-by-time medium water amount and the time-by-time water amount may be medium water amount information and water amount information obtained in time sequence when the unit time period is one hour.

The process of determining the required volume of the reservoir may be to subtract the time-by-time water amount from the time-by-time water amount to obtain a time-by-time water amount gap, collect the accumulated sums of time-by-time water amounts corresponding to time periods when the continuous time-by-time-by-time water amount gap is greater than zero, obtain a difference between the water amount sum and the water amount sum, and further determine the required volume of the reservoir.

Similarly, the step of determining the available volume of the reservoir may be to subtract the time-by-time water demand by the time-by-time water demand to obtain a time-by-time water demand gap, collect a cumulative sum of time-by-time water demand gaps corresponding to a time period in which the continuous time-by-time-by-time water demand gap is less than zero, obtain a difference between the water demand sum and the water volume sum, and further determine the available volume of the reservoir.

It can be understood that the aforementioned preset conditions include the aforementioned fifth preset condition, and if the aforementioned reservoir volume satisfies the aforementioned fifth preset condition, it is determined that the parameter to be evaluated in the aforementioned process satisfies the aforementioned preset condition, and step S404 is performed. Under the condition that the volume of the reservoir does not meet the fifth preset condition, determining that the method for adding the reservoir in the reclaimed water source heat pump system cannot meet the heating or refrigerating requirement of a building, and discarding the energy supply scheme of the reclaimed water source heat pump when the parameter to be evaluated does not meet the preset condition.

The procedure of the method for evaluating the capacity of the water source heat pump will be described below with reference to the structure of the device provided in the embodiment of the present application. Fig. 5 is an evaluation device for energy capability of a water source heat pump according to an embodiment of the present application, which is applied to a water source heat pump system, as shown in fig. 5, and the device includes:

an obtaining unit 501, configured to obtain system state information, where the system state information includes energy supply information and load information of the water source heat pump system;

A first determining unit 502, configured to determine a parameter to be evaluated according to the system state information;

and a second determining unit 503, configured to determine an evaluation result of the energy capacity of the medium water source heat pump according to the parameter to be evaluated.

In some optional embodiments, the first determining unit 502 is further configured to determine any one or more of a reclaimed water conveying distance, a reclaimed water temperature, energy, a maximum energy load, and a reservoir volume according to the system status information; the parameter to be evaluated includes any one or more of the reclaimed water conveying distance, the reclaimed water temperature, the energy, the maximum energy load and the reservoir volume.

In some optional embodiments, the second determining unit 503 is further configured to determine a preset condition corresponding to the parameter to be evaluated, where the preset condition is used to determine an evaluation result of the energy supply capability of the medium water source heat pump; the second determining unit 503 is further configured to determine an evaluation result of the energy supply capability of the medium water source heat pump when the parameter to be evaluated satisfies the preset condition.

In some alternative embodiments, the second determining unit 503 is further configured to determine a delivery distance threshold according to the energy supply information, where the energy supply information includes a rated delivery energy efficiency ratio and a delivery pipe economic ratio friction of the water source heat pump system, and the delivery distance threshold is indicative of a length of a longest pipeline laid between the water intake or the water outlet and the energy station; the second determining unit 503 is further configured to determine, according to the reclaimed water conveying distance and the conveying distance threshold, a first preset condition to be that the reclaimed water conveying distance is less than or equal to the conveying distance threshold, where the preset condition includes the first preset condition.

In some alternative embodiments, the second determining unit 503 is further configured to determine a reclaimed water temperature threshold, where the reclaimed water temperature threshold includes a first temperature threshold and a second temperature threshold, where the first temperature threshold is indicative of a lowest temperature of reclaimed water in a case where the reclaimed water source heat pump system is used for heat supply, and the second temperature threshold is indicative of a highest temperature of reclaimed water in a case where the reclaimed water source heat pump system is used for cooling; the second determining unit 503 is further configured to determine, according to the reclaimed water temperature and the reclaimed water temperature threshold, that a second preset condition is that the reclaimed water temperature is greater than or equal to the first temperature threshold in a case of heat supply or the reclaimed water temperature is less than or equal to the second temperature threshold in a case of cold supply, where the preset condition includes the second preset condition.

In some optional embodiments, the second determining unit 503 is further configured to determine an energy threshold according to the energy supply information, where the energy supply information includes a water withdrawal temperature difference and a device energy efficiency ratio of the water source heat pump system, the water withdrawal temperature difference is indicative of a difference between a water temperature at the water intake and a water temperature at the water withdrawal, and the energy threshold is indicative of a minimum heat supply amount provided by the water source heat pump system; the second determining unit 503 is further configured to determine, according to the energy and the energy threshold, a third preset condition to be that the energy is greater than or equal to the energy threshold, where the preset condition includes the third preset condition.

In some optional embodiments, the second determining unit 503 is further configured to determine a maximum required energy corresponding to the maximum energy consumption load according to the maximum energy consumption load and a device energy efficiency ratio of the water source heat pump system; the second determining unit 503 is further configured to determine a maximum sustainable energy according to a water flow rate and a water availability difference of the water source heat pump system, where the maximum sustainable energy represents a maximum energy of the water source heat pump system in a period corresponding to the maximum energy load; the second determining unit 503 is further configured to determine, according to the maximum required energy and the maximum affordable energy, a fourth preset condition to be that the maximum required energy is less than or equal to the maximum affordable energy, where the preset condition includes the fourth preset condition.

In some optional embodiments, the second determining unit 503 is further configured to obtain a medium water amount and a water amount of the load of the water source heat pump system in the unit time period, where a sum of the unit time periods is a time period corresponding to the maximum energy consumption load; the second determining unit 503 is further configured to determine a reservoir required volume according to a difference between a total water demand and a total water demand corresponding to the continuous unit time period in which the water demand is greater than the total water demand; the second determining unit 503 is further configured to determine an available volume of the reservoir according to a difference between a total water demand and a total water demand corresponding to the continuous unit time period in which the water demand is smaller than the total water demand; the second determining unit 503 is further configured to determine a fifth preset condition according to the reservoir demand volume and the reservoir available volume, where the reservoir demand volume is less than or equal to the reservoir available volume, the reservoir volume includes the reservoir demand volume and the reservoir available volume, and the preset condition includes the fifth preset condition.

It should be understood that the division of the units in the above apparatus is merely a division of a logic function, and may be fully or partially integrated into a physical entity or may be physically separated when actually implemented. For example, the above units may be processing elements set up separately, may be integrated in a certain chip of the terminal, may also be stored in a memory element of the controller in the form of program codes, and may be called by a certain processing element of the processor and perform the functions of the above units, where the processing element may be an integrated circuit chip with signal processing capability. Furthermore, the various units may be integrated together or may be implemented separately, in which case the steps of the method described above or the units of the apparatus described above may be implemented by means of integrated logic circuits in hardware or instructions in software form in a processor element, which may be a general-purpose processor or one or more integrated circuits configured to implement the method described above.

Fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application. As shown in fig. 6, the electronic device 600 may include: one or more processors 601, one or more memories 602, one or more communication interfaces 603, and a bus 604, the processors 601, memories 602, and communication interfaces 603 being connected by the bus 604. The electronic device may be the evaluation device in the foregoing description.

Wherein, the memory 602 is used for storing programs; the processor 601 is configured to execute the program stored in the memory, and when the program is executed, the processor 601 executes a method according to any one of possible embodiments of the method for evaluating the capacity of the water source heat pump.

It should be appreciated that in embodiments of the present application, the memory 602 includes, but is not limited to, random access memory (random access memory, RAM), read-only memory (ROM), erasable programmable read-only memory (erasable programmableread only memory, EPROM), or portable read-only memory (CDROM), as well as external memory other than computer memory and processor cache, and that a portion of the memory 602 may include non-volatile random access memory, for example, the memory 602 may also store device type information.

The processor 601 may be one or more central processing units (central processing unit, CPU), and in the case where the processor 601 is a CPU, the CPU may be a single-core CPU or a multi-core CPU; the processor 601 may also be other general purpose processors, digital signal processors (digital signal processor, DSP), application specific integrated circuits (application specific integrated circuit, ASIC), off-the-shelf programmable gate arrays (field-programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The steps performed in the foregoing embodiments may be implemented based on the structure of the electronic device shown in fig. 6, and the processor 601 may perform the implementation described in any one of the optional embodiments of the method for evaluating the energy supply capability of the water source heat pump provided in the embodiments of the present application; the implementation manner of the evaluation device described in the embodiments of the present application may also be performed, and specifically, the processor 601 may implement the functions of the acquisition unit 501, the first determination unit 502, and the second determination unit 503 in fig. 5.

Embodiments of the present application also provide a computer readable storage medium storing a computer program which, when executed by a processor, implements: acquiring system state information, wherein the system state information comprises energy supply information and load information of the reclaimed water source heat pump system; determining parameters to be evaluated according to the system state information; and determining an evaluation result of the energy capacity of the medium water source heat pump according to the parameter to be evaluated.

There is also provided in an embodiment of the present application a computer program product, the computer program product comprising: instructions or computer programs; the instructions or the computer program, when executed, may implement the methods shown in fig. 3 or fig. 4 described above.

It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical disk read-only, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described in terms of flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

Claims

1. The method for evaluating the energy supply capacity of the reclaimed water source heat pump is characterized by being applied to a reclaimed water source heat pump system and comprising the following steps of:

determining parameters to be evaluated according to the system state information, wherein the parameters to be evaluated comprise any one or more of reclaimed water conveying distance, reclaimed water temperature, energy, maximum energy consumption load and reservoir volume;

under the condition that the parameter to be evaluated meets the preset condition, determining an evaluation result of the energy supply capacity of the medium-water source heat pump;

the preset conditions comprise at least one of a first preset condition, a second preset condition, a third preset condition, a fourth preset condition and a fifth preset condition; the first preset condition is that the medium water conveying distance is smaller than or equal to a conveying distance threshold value, and the conveying distance threshold value represents the length of the longest pipeline paved between the water intake or the water outlet and the energy station; the second preset condition is that the reclaimed water temperature is greater than or equal to a first temperature threshold value under the condition of heat supply or is less than or equal to a second temperature threshold value under the condition of cold supply, wherein the first temperature threshold value represents the lowest temperature of reclaimed water under the condition that the reclaimed water source heat pump system is used for heat supply, and the second temperature threshold value represents the highest temperature of reclaimed water under the condition that the reclaimed water source heat pump system is used for cold supply; the third preset condition is that the energy is greater than or equal to an energy threshold value, and the energy threshold value represents the minimum heat supply quantity provided by the reclaimed water source heat pump system; the fourth preset condition is that the maximum required energy corresponding to the maximum energy utilization load is smaller than or equal to the maximum supportable energy, and the maximum supportable energy represents the maximum energy of the reclaimed water source heat pump system in the time period corresponding to the maximum energy utilization load; the fifth preset condition is that a reservoir demand volume is less than or equal to a reservoir usable volume, the reservoir volume including the reservoir demand volume and the reservoir usable volume.

2. The method according to claim 1, wherein the determining a preset condition corresponding to the parameter to be evaluated comprises:

determining the conveying distance threshold according to the energy supply information under the condition that the parameter to be evaluated comprises the reclaimed water conveying distance, wherein the energy supply information comprises the rated conveying energy efficiency ratio of the reclaimed water source heat pump system and the economic ratio friction of a conveying pipeline;

and determining the first preset condition according to the reclaimed water conveying distance and the conveying distance threshold.

3. The method according to claim 1, wherein the determining a preset condition corresponding to the parameter to be evaluated comprises:

determining the reclaimed water temperature threshold value under the condition that the parameter to be evaluated comprises the reclaimed water temperature, wherein the reclaimed water temperature threshold value comprises the first temperature threshold value and the second temperature threshold value;

and determining the second preset condition according to the reclaimed water temperature and the reclaimed water temperature threshold.

4. The method according to claim 1, wherein the determining a preset condition corresponding to the parameter to be evaluated comprises:

determining the energy threshold according to the energy supply information under the condition that the parameter to be evaluated comprises the energy, wherein the energy supply information comprises a water taking and withdrawing temperature difference and an equipment energy efficiency ratio of the reclaimed water source heat pump system, and the water taking and withdrawing temperature difference represents a difference value between the water temperature at the water intake and the water temperature at the water withdrawal;

And determining the third preset condition according to the energy and the energy threshold value.

5. The method according to claim 1, wherein the determining a preset condition corresponding to the parameter to be evaluated comprises:

under the condition that the parameter to be evaluated comprises the maximum energy consumption load, determining the maximum required energy corresponding to the maximum energy consumption load according to the maximum energy consumption load and the equipment energy efficiency ratio of the reclaimed water source heat pump system;

and determining the fourth preset condition according to the maximum required energy and the maximum affordable energy.

6. The method according to any one of claims 1 to 5, wherein the determining a preset condition corresponding to the parameter to be evaluated comprises:

acquiring the medium water quantity and the load water quantity of the water source heat pump system in a unit time period under the condition that the parameter to be evaluated comprises the reservoir volume, wherein the sum of the unit time periods is the time period corresponding to the maximum energy load;

determining the required volume of the reservoir according to the difference value between the total water demand and the total water demand corresponding to the continuous unit time period when the water demand is greater than the total water demand;

Determining the available volume of the reservoir according to the difference value between the sum of water demand and the sum of reclaimed water demand corresponding to the continuous unit time period when the water demand is smaller than the reclaimed water demand;

and determining the fifth preset condition according to the required volume of the reservoir and the available volume of the reservoir.

7. An evaluation device for the energy supply capability of a reclaimed water source heat pump is characterized by being applied to a reclaimed water source heat pump system and comprising:

the first determining unit is used for determining parameters to be evaluated according to the system state information, wherein the parameters to be evaluated comprise any one or more of reclaimed water conveying distance, reclaimed water temperature, energy, maximum energy consumption load and reservoir volume;

the second determining unit is used for determining preset conditions corresponding to the parameters to be evaluated, and the preset conditions are used for determining an evaluation result of the energy capacity of the medium water source heat pump;

8. The apparatus of claim 7, wherein the device comprises a plurality of sensors,

the second determining unit is further used for determining the conveying distance threshold according to the energy supply information when the parameter to be evaluated comprises the reclaimed water conveying distance, wherein the energy supply information comprises the rated conveying energy efficiency ratio and the conveying pipeline economic ratio friction resistance of the reclaimed water source heat pump system;

the second determining unit is further configured to determine the first preset condition according to the reclaimed water conveying distance and the conveying distance threshold.

9. The apparatus of claim 7, wherein the device comprises a plurality of sensors,

the second determining unit is further configured to determine the reclaimed water temperature threshold value, where the parameter to be evaluated includes the reclaimed water temperature, and the reclaimed water temperature threshold value includes the first temperature threshold value and the second temperature threshold value;

the second determining unit is further configured to determine the second preset condition according to the reclaimed water temperature and the reclaimed water temperature threshold.

10. The apparatus of claim 7, wherein the device comprises a plurality of sensors,

the second determining unit is further configured to determine, according to the energy supply information, the energy supply threshold value when the parameter to be evaluated includes the energy supply, where the energy supply information includes a water taking-out-of-water temperature difference and an equipment energy efficiency ratio of the reclaimed water source heat pump system, and the water taking-out-of-water temperature difference represents a difference between a water temperature at the water intake and a water temperature at the water outlet;

The second determining unit is further configured to determine the third preset condition according to the energy and the energy threshold.

11. The apparatus of claim 7, wherein the device comprises a plurality of sensors,

the second determining unit is further configured to determine, when the parameter to be evaluated includes the maximum energy consumption load, a maximum required energy corresponding to the maximum energy consumption load according to the maximum energy consumption load and a device energy efficiency ratio of the reclaimed water source heat pump system;

the second determining unit is further configured to determine the maximum affordable energy according to a reclaimed water flow rate and a reclaimed water available temperature difference of the reclaimed water source heat pump system;

the second determining unit is further configured to determine the fourth preset condition according to the maximum required energy and the maximum affordable energy.

12. The device according to any one of claims 7 to 11, wherein,

the second determining unit is further configured to obtain, when the parameter to be evaluated includes the reservoir volume, a medium water amount and a load water amount of the water source heat pump system in a unit time period, where a sum of the unit time periods is a time period corresponding to the maximum energy consumption load;

The second determining unit is further configured to determine a required volume of the reservoir according to a difference value between a total water demand and a total water demand corresponding to the continuous unit time period in which the water demand is greater than the water demand;

the second determining unit is further configured to determine an available volume of the reservoir according to a difference value between a total water demand and a total water demand corresponding to the continuous unit time period in which the water demand is smaller than the water demand;

the second determining unit is further configured to determine the fifth preset condition according to the reservoir demand volume and the reservoir available volume.

13. An electronic device, comprising:

a memory for storing a program;

a processor for executing the program stored in the memory, the processor performing the method of any one of claims 1 to 6 in the case where the program is executed.

14. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein a computer program comprising program instructions which, when executed by a processor, perform the method according to any of claims 1 to 6.