CN104487777A

CN104487777A - Heat source system

Info

Publication number: CN104487777A
Application number: CN201380036452.9A
Authority: CN
Inventors: 北岛庆一; 菊池宏成; 宫岛裕二
Original assignee: Hitachi Ltd
Current assignee: Hitachi Ltd
Priority date: 2012-07-13
Filing date: 2013-07-12
Publication date: 2015-04-01
Also published as: SG11201500249RA; WO2014010738A1; PH12015500082A1; JP6029363B2; JP2014020630A

Abstract

Provided is a heat source system for controlling a plurality of refrigerators, the heat source system being capable of operating at a high coefficient of performance. A heat source system (1) is constituted from three heat source devices (1a, 1b, 1c) provided with refrigerators (4a, 4b, 4c). The heat source system (1) further includes: a simulation means for computing the coefficient of performance of each of the heat source devices (1a, 1b, 1c); an order of priority setting means for increasing the order of priority of an operation for the heat source device (1a, 1b, 1c) with the highest maximum coefficient of performance; a schedule determining means for determining, on the basis of a heat demand prediction of a heat load (8), an operation schedule so that the heat source machine (1a, 1b, 1c) with the highest order of priority is operated first; and a heat source system control means for operating the heat source devices (1a, 1b, 1c) on the basis of the operation schedule.

Description

Heat source system

Technical field

The present invention relates to a kind of heat source system.

Background technology

There is multiple heat resource equipment, and by providing the thermal medium of low temperature to thermic load thus providing cold and hot heat source system to be widely known by the people to this thermic load.As the background technology of this technical field, such as, describe " when the requirement heat that should maintain according to multiple Driven by inverter turborefrigerator 1c ~ 1e in patent document 1, and when utilizing control device 9 to carry out the number of units of Driven by inverter turborefrigerator 1c ~ 1e of controlling run, in the coefficient of performance of Driven by inverter turborefrigerator 1c ~ 1e determined in the temperature of the cooling water detected by thermometer t and the relation of rate of load condensate, control device 9 determines that the coefficient of performance becomes the rate of load condensate scope of more than setting, and control inverter drives the inverter of turborefrigerator 1c ~ 1e, to make each Driven by inverter turborefrigerator 1c, the rate of load condensate of 1d and 1e is within the scope of determined rate of load condensate " this content (with reference to this specification digest).

Prior art document

Patent document

Patent document 1:JP JP 2005-114295 publication

Summary of the invention

The technical task that invention will solve

The relation of the rate of load condensate in the refrigeration machine that heat source system has and the coefficient of performance (Coefficient OfPerformance:COP) is: rate of load condensate more increases, and COP more increases.Therefore, when the heat demand that the rate of load condensate of refrigeration machine reduces, by the heat put aside in advance in heat storage tank is supplied to load, thus avoid the operation of refrigeration machine under underload rate (operation that COP is low), sometimes can realize energy-conservation by this constituted mode.

In addition, the equipment (shared device of pump, cooling tower etc.) beyond the refrigeration machine that has of heat source system also causes the characteristic of energy consumption to change according to the difference of service condition.Therefore, according to the difference of the wet-bulb temperature of the thermic load amount that should process (heat demand required by thermic load) or extraneous gas, the COP of whole heat source system changes.In addition, in the heat source system with multiple refrigeration machine, if switch the operation order of refrigeration machine during change according to the difference of season or time period at the wet-bulb temperature of heat demand or extraneous gas, then the operation number of units of refrigeration machine and shared device changes, therefore, the COP of whole heat source system can great changes will take place.

In order to this heat source system of energy-saving operation, run under needing the service condition uprised at COP.But due to along with the heat demand of thermic load or wet-bulb temperature are according to the difference of season or time period, its variable quantity or pace of change are also different, and therefore, the service condition that COP uprises is also different.In the heat source system with multiple refrigeration machine, the operation order of refrigeration machine can change.Therefore, under being difficult to all the time the COP of the heat source system with multiple refrigeration machine to be maintained higher state.

Such as, even heat source system disclosed in patent document 1, be also difficult to multiple refrigeration machine to control for the variation for thermic load and COP is maintained higher.

Therefore, problem of the present invention for provide a kind of can control multiple refrigeration machine thus the coefficient of performance is maintained higher while carry out the heat source system that runs.

For solving the means of problem

For solve the present invention of above-mentioned problem be a kind of comprise at least two systems with refrigeration machine heat resource equipment and the heat source system formed.It is characterized by, have: analogue unit, carry out operational performance coefficient according to each heat resource equipment; Priority setup unit, sets higher by the priority of the operation of heat resource equipment higher for the highest coefficient of performance; Scheduling determining means, traffic control decision is by the prediction based on the change of the heat demand in thermic load: be set higher heat resource equipment from priority and at first run; And operation control unit, run heat resource equipment based on traffic control.

Invention effect

According to the present invention, provide a kind of can control multiple refrigeration machine thus the coefficient of performance is maintained higher while carry out the heat source system that runs.

Accompanying drawing explanation

Fig. 1 relates to the structure chart of the heat source system of the present embodiment.

Fig. 2 is the figure of the functional block representing control device.

Fig. 3 (a) is the figure of the evaluation function representing the refrigeration machine different due to the difference of form; Fig. 3 (b) is the figure of the evaluation function representing the refrigeration machine different due to the difference in season.

Fig. 4 is the figure of the coefficient of performance of the change representing heat demand and the refrigeration machine changed according to this change.

Fig. 5 represents that energy-saving thermal storage heat release scheduling determining means calculates the flow chart of the order of the traffic control for running heat source system.

Fig. 6 is the figure of an example of the passing representing heat demand and the regenerative operation desired value STL correspondingly determined and heat radiation operational objective value RTL.

Detailed description of the invention

Below, suitably with reference to accompanying drawing, embodiments of the invention are described in detail.

Embodiment

Below, refrigeration machine and the shared device that runs together with this refrigeration machine are referred to as heat resource equipment.

In addition, although Fig. 1 shows the heat source system of the heat resource equipment with three systems, the quantity of heat resource equipment is not limited to three systems.Both can be the heat source system of the heat resource equipment with two systems, also can be the heat source system of the heat resource equipment with more than four systems.

As shown in Figure 1, have the heat resource equipment of three systems (the first system 1a, second system 1b, the 3rd system 1c) in heat source system 1, each heat resource equipment is controlled by control device 13 (CONT).

In the present embodiment, the first system 1a has the system of inverter turborefrigerator 4a as refrigeration machine; Second system 1b has the system of turborefrigerator 4b as refrigeration machine; 3rd system 1c has waste heat utilization to absorb the system of cold warm water machine 4c as refrigeration machine.

In addition, the combination of the refrigeration machine be included in each heat resource equipment is not limited to this combination.

The first system 1a is the system that the first cooling water W1a is undertaken by cooling water pump 2a circulating, and is configured to the shared device comprising the cooling tower 5a (COOL) of cooling first cooling water W1a, cooling fan 17a, the inverter 9a (INV) of driving cooling fan 17a and the inverter 10a (INV) of driving cooling water pump 2a etc. to cooling tower 5a air-supply.

Cooling fan 17a preferably can change rotary speed by inverter control, and can regulate the amount of cooling water of the first cooling water W1a of cooling tower 5a.In addition, cooling water pump 2a preferably can regulate the flow of the first cooling water W1a by inverter control.

Second system 1b is the system that the second cooling water W1b is undertaken by cooling water pump 2b circulating, and is configured to comprise the shared device such as the cooling tower 5b (COOL) of cooling second cooling water W1b, cooling fan 17b, the inverter 9b (INV) of driving cooling fan 17b and the inverter 10b (INV) of driving cooling water pump 2b to cooling tower 5b air-supply.

Cooling fan 17b preferably can change rotary speed by inverter control, and can regulate the amount of cooling water of the second cooling water W1b of cooling tower 5b.In addition, cooling water pump 2b preferably can regulate the flow of the second cooling water W1b by inverter control.

3rd system 1c is the system that the 3rd cooling water W1c is undertaken by cooling water pump 2c circulating, and is configured to comprise the shared device such as the cooling tower 5c (COOL) of cooling the 3rd cooling water W1c, cooling fan 17c, the inverter 9c (INV) of driving cooling fan 17c and the inverter 10c (INV) of driving cooling water pump 2c to cooling tower 5c air-supply.

Cooling fan 17c preferably can change rotary speed by inverter control, and can regulate the amount of cooling water of the 3rd cooling water W1c of cooling tower 5c.In addition, cooling water pump 2c preferably can regulate the flow of the 3rd cooling water W1c by inverter control.

In addition, waste heat utilization absorption cold warm water machine 4c is connected to gas engine 12 (ENG).Gas engine 12 and the row's warm water pump 16 be connected with gas engine 12, the electricity needs according to not shown electricity needs source is run.

In addition, have cold warm water to water manifold 7a (Ha) and cold warm water backwater header 7b (Hb) in heat source system 1, cold warm water is connected with thermic load 8 (L) respectively to water manifold 7a and cold warm water backwater header 7b.Thermic load 8 is the load sources producing heat demand, from each heat resource equipment to the cold water W3 heat supply provided to water manifold 7a via cold warm water.In addition, the cold water W3 becoming high temperature is turned back to each heat resource equipment via cold warm water backwater header 7b by thermic load 8.

The waste heat utilization of the inverter turborefrigerator 4a of the first system 1a, the turborefrigerator 4b of second system 1b and the 3rd system 1c absorbs cold warm water machine 4c and is connected to water manifold 7a with cold warm water.Further, thermic load 8 is provided to after the first cold warm water W2a utilizing inverter turborefrigerator 4a to be cooled by the first cooling water W1a, the second cold warm water W2b utilizing turborefrigerator 4b to be cooled by the second cooling water W1b and the 3rd cold warm water W2c utilizing waste heat utilization absorption cold warm water machine 4c to be cooled by the 3rd cooling water W1c become cold water W3 via cold warm water to water manifold 7a.

In addition, inverter turborefrigerator 4a, turborefrigerator 4b, waste heat utilization absorb cold warm water machine 4c and are connected with cold warm water backwater header 7b.So the cold water W3 becoming high temperature in thermic load 8 is transported to inverter turborefrigerator 4a by cold warm water pump 3a by as the first cold warm water W2a from cold warm water backwater header 7b.Cold warm water pump 3a is driven by inverter 11a (INV).

In addition, the cold water W3 becoming high temperature in thermic load 8 is transported to turborefrigerator 4b by cold warm water pump 3b as the second cold warm water W2b by from cold warm water backwater header 7b.Cold warm water pump 3b is driven by inverter 11b (INV).And the cold water W3 becoming high temperature in thermic load 8 is transported to waste heat utilization by cold warm water pump 3c as the 3rd cold warm water W2c from cold warm water backwater header 7b and is absorbed cold warm water machine 4c.Cold warm water pump 3c is driven by inverter 11c (INV).

In addition, there is the aqua storage tank 20 (TANK) of storage cold water W3 in the heat source system 1 of the present embodiment as heat accumulation groove.

Aqua storage tank 20 stores to utilize inverter turborefrigerator 4a, turborefrigerator 4b and waste heat utilization absorption cold warm water machine 4c cool and be transported to cold warm water to the storage unit of the cold water W3 of water manifold 7a, is the device storing cold temperature by storing cold water W3.

And, also there is pump (heat pump 21) in aqua storage tank 20.So the cold temperature (cold water W3) be stored in aqua storage tank 20 is provided to thermic load 8 by heat pump 21.

In addition, heat pump 21 regulates the structure of rotary speed preferably through such as inverter control.According to this structure, such as, control device 13, by regulating the rotary speed of heat pump 21, regulates the supply of the cold water W3 from aqua storage tank 20 to thermic load 8.

In addition, at entrance A1i and the outlet A1o place of the first cooling water W1a of inverter turborefrigerator 4a, there is thermometer 41a, 41b of the temperature of measurement first cooling water W1a, at entrance A2i and the outlet A2o place of the first cold warm water W2a of inverter turborefrigerator 4a, there is thermometer 42a, 42b of the temperature of the cold warm water W2a of measurement first.

In addition, at entrance B1i and the outlet B1o place of the second cooling water W1b of turborefrigerator 4b, there is thermometer 51a, 51b of the temperature of measurement second cooling water W1b; Go out with outlet B2o at the entrance B2i of the second cold warm water W2b of turborefrigerator 4b, there is thermometer 52a, 52b of the temperature of the cold warm water W2b of measurement second.

And, absorb entrance C1i and the outlet C1o place of the 3rd cold warm water W1c of cold warm water machine 4c at waste heat utilization, there is thermometer 61a, 61b of the temperature of measurement the 3rd cooling water W1c; Absorb entrance C2i and the outlet C2o place of the 3rd cold warm water W2c of cold warm water machine 4c at waste heat utilization, there is thermometer 62a, 62b of the temperature of the cold warm water W2c of measurement the 3rd.

In addition, there is the flowmeter 43,44 of the flow measuring the first cooling water W1a and the first cold warm water W2a flow in inverter turborefrigerator 4a in the first system 1a.There is the flowmeter 53,54 of the flow measuring the second cooling water W1b and the second cold warm water W2b flow in turborefrigerator 4b in second system 1b.

And, have to measure in the 3rd system 1c and flow into the flowmeter 63,64 that waste heat utilization absorbs the flow of the 3rd cooling water W1c in cold warm water machine 4c and the 3rd cold warm water W2c.

Further, near cooling tower 5a, 5b and 5c, the relative humidity meter 46,56 and 66 of the wet-bulb thermometer 45,55 and 65 with the wet-bulb temperature measuring air and the humidity (relative humidity) measuring air.

Further, each thermometer 41a, 41b, 42a, 42b, 51a, 51b, 52a, 52b, 61a, 61b, 62a, 62b; Each flowmeter 43,44,53,54,63,64; Wet-bulb thermometer 45,55,65; And each measured value of relative humidity meter 46,56,66 is imported into control device 13.

Fig. 2 is the figure of the functional block representing control device 13.

Control device 13 is the control device of general structure with all not shown CPU (Central Processing Unit: central processing unit), ROM (Read Only Memory: read-only storage), RAM (Random AccessMemory: random access memory) and storage device (HDD:Hard Disk Drive: hard disk drive etc.), such as, be configured to CPU execution and be written into the program of ROM to realize the function of each functional block.

As shown in Figure 2, as functional block, the control device 13 of the present embodiment has: heat source system control unit 31, analogue unit 32, energy-saving run order computing unit 33 and energy-saving thermal storage heat radiation scheduling determining means 34.

The function of these functional blocks is incorporated in the program performed by control device 13, and control device 13 realizes each functional block by performing this program.

Analogue unit 32 to carry out the evaluation function under computing monomer to each heat resource equipment (the first system 1a, second system 1b, the 3rd system 1c) based on inputted data pin, and, in order to make, the evaluation function of computing is minimum, and rate of load condensate when computing runs each heat resource equipment with monomer.

In the present embodiment, evaluation function is set to the " CO of each hot manufacture ₂discharge rate (kg-CO ₂/ GJ) ", the evaluation coefficient of this evaluation function is set to the CO of consumed energy (electric power, gas etc.) ₂efflux coefficient.

In this case, the evaluation function (CO of each hot manufacture of heat resource equipment ₂discharge rate) use " CO ₂discharge rate/hot manufacture " represent.In addition, the coefficient of performance (COP) of heat resource equipment represents with " hot manufacture/consumption of calorie ".Therefore, evaluation function becomes " CO ₂discharge rate/(COP × consumption of calorie) ", evaluation function is less, and the coefficient of performance (COP) becomes this higher dependency relation and sets up.

Therefore, in the present embodiment, if the mode diminished with evaluation function runs heat resource equipment, then the coefficient of performance (COP) uprises.

In addition, the data being input to analogue unit 32 are CO ₂the device characteristics data, hierarchical structure data etc. of efflux coefficient, heat demand prediction data, energy cost system, each heat resource equipment (the first system 1a, second system 1b, the 3rd system 1c) or shared device represent the data of the facility information of heat source system 1.Hierarchical structure data is the refrigeration machine (inverter turborefrigerator 4a, turborefrigerator 4b, waste heat utilization absorb cold warm water machine 4c) in each heat resource equipment of regulation and the data of the annexation of shared device.

(a) of Fig. 3 is the figure of the evaluation function representing the refrigeration machine different due to the difference of form; Fig. 3 (b) is the figure of the evaluation function representing the refrigeration machine different due to the difference in season.

Such as, the waste heat utilization possessed in the turborefrigerator 4b (with reference to Fig. 1) possessed in the inverter turborefrigerator 4a (with reference to Fig. 1), the second system 1b that possess in the first system 1a and the 3rd system 1c absorbs cold warm water machine 4c (with reference to Fig. 1) and has different qualities, as shown in Fig. 3 (a), when the wet-bulb temperature of the environment arranging each refrigeration machine is equal, evaluation function becomes minimum rate of load condensate is different.

And, as shown in Fig. 3 (b), inverter turborefrigerator 4a, turborefrigerator 4b and waste heat utilization absorb cold warm water machine 4c can according to the difference of season (being particularly provided with the wet-bulb temperature of the extraneous gas of the environment of each heat resource equipment), and evaluation function is change also.

Therefore, analogue unit 32 represents the consumed energy characteristic in each heat resource equipment with the evaluation function of the energy ezpenditure comprised in shared device, evaluate consumed energy characteristic according to each heat resource equipment (being respectively the first system 1a shown in Fig. 1, second system 1b and the 3rd system 1c).Therefore, analogue unit 32 will comprise each refrigeration machine (inverter turborefrigerator 4a, turborefrigerator 4b and waste heat utilization absorb cold warm water machine 4c) and each heat resource equipment (the first system 1a, second system 1b and the 3rd system 1c) of shared device is set to one group according to each system respectively.So analogue unit 32 obtains evaluation function according to each system (heat resource equipment).In the present embodiment, analogue unit 32 calculates the evaluation function of each heat resource equipment by following formula (1).

EF＝(EP+EPUMP+EFAN)×CEP+EG×CEG …(1)

EF: evaluation function (kg-CO ₂/ GJ)

EP: heat resource equipment electric power consumption (kWh)

EG: heat resource equipment gas consumption (m ³n)

EPUMP: pump electric power consumption (kWh)

EFAN: cooling tower fan electric power consumption ((kWh)

CEP: the CO of electric power ₂efflux coefficient (kg-CO ₂/ kWJ)

CEG: the CO of gas ₂efflux coefficient (kg-CO ₂/ m ³n)

In addition, as shown in Fig. 3 (b), the evaluation function of each heat resource equipment also can change according to the difference in season (wet-bulb temperature).Such as, the coefficient corresponding with wet-bulb temperature is set by according to each heat resource equipment, the evaluation function of each heat resource equipment become with correspond to the multiplication of wet-bulb temperature after the value that obtains.

This coefficient is preferably set in advance as the design load of such as each heat resource equipment or characteristic value.

Like this, the evaluation function EF calculated by formula (1) be using the wet-bulb temperature (TWB) of the rate of load condensate of heat resource equipment (LR) and extraneous gas as the function of parameter, can represent as following formula (2).

EF＝f(LR，TWB) …(2)

LR: the rate of load condensate (%) of heat resource equipment

TWB: the wet-bulb temperature (degree) of extraneous gas

Above-mentioned formula (2) represents that the evaluation function EF of heat resource equipment changes according to the change of the wet-bulb temperature (TWB) of rate of load condensate (LR) and extraneous gas.

As mentioned above, the analogue unit 32 of the present embodiment at random sets wet-bulb temperature, and, while the rate of load condensate change making each heat resource equipment based on set wet-bulb temperature, carry out the evaluation function of each heat resource equipment of computing (the first system 1a, second system 1b and the 3rd system 1c) based on formula (1) and the coefficient corresponding with wet-bulb temperature.And analogue unit 32 computing evaluation function becomes the controlled quentity controlled variable of minimum heat resource equipment.

That is, analogue unit 32 has following functions, that is, hypothetical make wet-bulb temperature and rate of load condensate change while, computing evaluation function becomes the rate of load condensate of minimum heat resource equipment, and computing is used for the controlled quentity controlled variable running heat resource equipment under this rate of load condensate.

Energy-saving run order computing unit 33 sets the priority running each heat resource equipment (the first system 1a, second system 1b and the 3rd system 1c), plays the function as priority setup unit.

That is, when the controlled quentity controlled variable becoming minimum heat resource equipment with the evaluation function of analogue unit 32 computing is to run each heat resource equipment, energy-saving run order computing unit 33 produces required hot manufacture, further, become with the evaluation function of heat source system 1 priority that minimum mode sets the operation of each heat resource equipment.

The wet-bulb temperature of extraneous gas or the rate of load condensate of heat resource equipment can the environment being provided with heat source system 1 according to Fig. 1 or heat source system 1 service condition and change.Such as, if be assumed to by wet-bulb temperature 17 degree (intergrades in year in Tokyo), then the heat source system 1 that multiple heat resource equipment runs can not become extreme underload.

As an example, the ability that the inverter turborefrigerator 4a possessed in the first system 1a, the turborefrigerator 4b possessed in second system 1b and the waste heat utilization that possesses in the 3rd system 1c absorb cold warm water machine 4c is all set to 100kW, and according to the order that inverter turborefrigerator 4a, turborefrigerator 4b and waste heat utilization absorb cold warm water machine 4c, the priority of operation is set higher.

In this case, when the heat demand of thermic load 8 is 90kW, if only have inverter turborefrigerator 4a to drive, then rate of load condensate becomes 90%.If the heat demand of thermic load 8 becomes 100kW, inverter turborefrigerator 4a and turborefrigerator 4b drives, then rate of load condensate becomes 50%.

Therefore, in the operation of heat source system 1, when the heat demand (load) of heat resource equipment 8 changes, rate of load condensate can be made to change in the scope of 50 ~ 100%.

In addition, the energy-saving run order computing unit 33 of the present embodiment, utilize the wet-bulb temperature (TWB) of extraneous gas and the Frequency P of rate of load condensate, as shown in following formula (3), the evaluation function EF (f (LR, TWB)) of the heat resource equipment represented by formula (1) is modified.

EF’＝∑(f(LR，TWB)×LR×P(LR，TWB))/∑LR …(3)

EF ': the evaluation function (kg-CO of heat resource equipment ₂/ GJ)

P: the Frequency of the wet-bulb temperature TWB of extraneous gas and the combination of rate of load condensate LR

The size of the evaluation function EF ' of the heat resource equipment shown in energy-saving run order computing unit 33 pairs of formula (3) compares, and sets the priority of each heat resource equipment in the mode making the relative importance value of the operation of the less heat resource equipment of evaluation function EF ' improve.

In addition, " ∑ " expression of formula (3) carries out additional calculation to the combination of the wet-bulb temperature TWB of all extraneous gas and the rate of load condensate LR of heat resource equipment.

As mentioned above, modify with the evaluation function EF of Frequency P to heat resource equipment of the wet-bulb temperature (TWB) of extraneous gas with the combination of rate of load condensate (LP), thereby, it is possible to evaluation function EF ' to be regarded as the impact assessment function of the change considering the evaluation function EF corresponding to the season of object day.

Such as, when the season of object day is " summer ", the higher and Frequency P that the is combination that rate of load condensate (LP) is higher of wet-bulb temperature (TWB) uprises.

This Frequency P be preferably based on the meteorological data (wet-bulb temperature) of such as passing by with represent heat resource equipment rate of load condensate dependency relation statistics etc. and set in advance.

Energy-saving thermal storage heat radiation scheduling determining means 34 is imported into by the priority of each heat resource equipment of operation of energy-saving run order computing unit 33 setting.Energy-saving thermal storage heat radiation scheduling determining means 34, when with the priority set by energy-saving run order computing unit 33 according to when should run heat source system 1 (with reference to Fig. 1) at the heat demand of heat resource equipment process, determine the traffic control (accumulation of heat heat radiation scheduling) running each heat resource equipment, become minimum (that is, the coefficient of performance becomes maximum) to make the evaluation function of whole heat source system 1.Therefore, the energy-saving thermal storage heat radiation scheduling determining means 34 of the present embodiment plays the function as scheduling determining means.

So, energy-saving thermal storage heat radiation scheduling determining means 34 is obtained about when the controlled quentity controlled variable making the evaluation function of each heat resource equipment become minimum calculated with analogue unit 32, and the catabiotic evaluation function of whole heat source system 1 when having run each heat resource equipment according to the priority set by energy-saving run order computing unit 33.

Such as, as shown in Figure 4, heat demand in thermic load 8 (with reference to Fig. 1) changes, the coefficient of performance (evaluation function) is understood the respective operation number of units when operation number of units of heat resource equipment being changed according to the change according to heat demand and changes.

In addition, as shown in Figure 4, why the coefficient of performance (evaluation function) change in the excursion that the number of units of run heat resource equipment becomes identical heat demand be because: the temperature of the cooling water in the impact of characteristic of each heat resource equipment (the first system 1a, second system 1b and the 3rd system 1c) shown in Fig. 1, the flow of cold water W3 and the flow of cooling water (the first cooling water W1a, the second cooling water W1b and the 3rd cooling water W1c) and the exit of cooling tower 5a, 5b and 5c is all managed by whole heat source system 1 (with reference to Fig. 1).In addition, if have the operation number of units increase of heat resource equipment, the reason of the tendency of coefficient of performance step-down (evaluation function increase) is: the mode that the relative importance value of heat resource equipment that energy-saving run order computing unit 33 diminishes (that is, the coefficient of performance improve) with evaluation function uprises sets the priority running each heat resource equipment.

In order to improve the coefficient of performance (COP) under the operation of the heat source system 1 shown in Fig. 1, preferably with CO ₂the mode that discharge capacity tails off, the evaluation function of whole heat source system 1 namely in the present embodiment diminishes run heat source system 1.Therefore, as shown in Figure 4, the energy-saving thermal storage heat radiation scheduling determining means 34 of the present embodiment decides when evaluation function becomes the operation of minimum heat resource equipment according to the operation number of units of each heat resource equipment (the first system 1a, second system 1b, the 3rd system 1c) rate of load condensate (Best Point).Such as, the Best Point (rate of load condensate) during the heat resource equipment of an operation system is set to PA1; Best Point (rate of load condensate) during the heat resource equipment of operation two systems is set to PA2; Best Point (rate of load condensate) during the heat resource equipment of operation three systems is set to PA3.

The evaluation function EF ' of object day (season) is become minimum heat resource equipment to realize this evaluation function EF ' (CO by Best Point PA1 when running the heat resource equipment of a system ₂discharge capacity) the rate of load condensate of mode when running.Best Point PA2 when running the heat resource equipment of two systems is by the heat resource equipment of two little for the minimum evaluation function EF ' of object day (season) systems, the rate of load condensate of total when running under the rate of load condensate becoming minimum separately evaluation function EF '.

In addition, Best Point PA3 when running the heat resource equipment of three systems is the rate of load condensate of the total when the day (season) as object runs respective heat resource equipment with the rate of load condensate becoming minimum evaluation function EF ' respectively.

In addition, the PL1 shown in Fig. 4, PL2 and PL3 run the different point of the Best Point of the rate of load condensate of each heat resource equipment from representing.Will mention after its detailed content.

So, energy-saving thermal storage heat radiation scheduling determining means 34 shown in Fig. 2 is according to the operation number of units of heat resource equipment, calculate controlled quentity controlled variable (controlling the controlled quentity controlled variable of each refrigeration machine and shared device), to make to run each heat resource equipment under the rate of load condensate becoming this Best Point (PA1, PA2 and PA3).And, when having run each heat resource equipment like this, the hot manufacture in heat resource equipment can not meet the heat demand of thermic load 8 (with reference to Fig. 1), use the heat stored in aqua storage tank 20 (with reference to Fig. 1).Specifically, the hot manufacture in heat resource equipment can not meet the heat demand of thermic load 8, energy-saving thermal storage heat radiation scheduling determining means 34 drives heat pump 21 (with reference to Fig. 1), and the cold water W3 stored in aqua storage tank 20 is supplied to thermic load 8.

Such as, represent if set in advance the hot manufacture of heat resource equipment can not meet the heat demand of thermic load 8 heat, be supplied to the quantity delivered of the cold water W3 of thermic load 8 by heat pump 21 from aqua storage tank 20 and be stored in the figure of relation of water temperature of the cold water W3 aqua storage tank 20, then energy-saving thermal storage heat radiation scheduling determining means 34 can with reference to this figure, and can not meet the heat of the heat demand of thermic load 8 based on the hot manufacture in heat resource equipment and be stored in the water temperature of the cold water W3 in aqua storage tank 20, the supply of the cold water W3 provided from aqua storage tank 20 to thermic load 8 is provided.

In addition, such as, represent the figure of the relation of the supply of cold water W3 and the rotary speed of heat pump 21 provided from aqua storage tank 20 to thermic load 8 if set in advance, then energy-saving thermal storage heat radiation scheduling determining means 34 can set the rotary speed of the heat pump 21 corresponding with the supply of the cold water W3 provided from aqua storage tank 20 to thermic load 8 with reference to this figure.So energy-saving thermal storage heat radiation scheduling determining means 34 can be set to set rotary speed to drive heat pump 21.

In addition, as long as the water temperature being stored in the cold water W3 in aqua storage tank 20 is set as the temperature of the cooling water in the exit of the heat resource equipment such as run.

As an example, when run the first system 1a heat resource equipment this, the water temperature being stored in the cold water W3 in aqua storage tank 20 is set as and is: the temperature of the first cold warm water W2a such as measured at the outlet A2o place thermometer 42b of inverter turborefrigerator 4a.

In addition, as an example, when the heat resource equipment these two of the heat resource equipment and second system 1b that have run the first system 1a, the water temperature being stored in the cold water W3 in aqua storage tank 20 is set as and is: the temperature of the first cold warm water W2a such as measured at the outlet A2o place thermometer 42b of inverter turborefrigerator 4a and the mean value of the temperature of the second cold warm water W2b measured at the outlet B2o place thermometer 52b of turborefrigerator 4b.

In addition, when having run the heat resource equipment these three of the heat resource equipment of the first system 1a, the heat resource equipment of second system 1b and the 3rd system 1c, the water temperature of cold water W3 stored in aqua storage tank 20 has been set as and has been: the mean value of the temperature of the first cold warm water W2a such as measured at the outlet A2o place thermometer 42b of inverter turborefrigerator 4a, the temperature of the second cold warm water W2b measured at the outlet B2o place thermometer 52b of turborefrigerator 4b and the temperature at the 3rd cold warm water W2c of the outlet C2o place thermometer 62b measurement of waste heat utilization absorption cold warm water machine 4c.

Or, also can be the structure of the thermometer (not shown) in aqua storage tank 20 with the water temperature measuring cold water W3.

Such as, energy-saving thermal storage heat radiation scheduling determining means 34 carries out following setting as shown in Figure 4, that is: when heat demand is " H1 ", run a heat resource equipment; When heat demand ratio " H1 " hour, do not run heat resource equipment, but the heat be stored in aqua storage tank 20 (cold water W3) is supplied to thermic load 8.In addition, energy-saving thermal storage heat radiation scheduling determining means 34, when heat demand is " H2 ", runs two heat resource equipments.And, also carry out following setting, that is: when heat demand ratio " H2 " hour, run a heat resource equipment, the heat that the heat provided from heat resource equipment is still not enough supplements by the heat be stored in aqua storage tank 20 (cold water W3) is supplied to thermic load 8.In addition, energy-saving thermal storage heat radiation scheduling determining means 34, when heat demand is " H3 ", runs three heat resource equipments.And, also following setting is carried out, that is: when heat demand ratio " H3 " hour, run two heat resource equipments, the heat that the heat provided from heat resource equipment is still not enough supplements by the heat be stored in aqua storage tank 20 (cold water W3) is supplied to thermic load 8.

That is, energy-saving thermal storage heat radiation scheduling determining means 34 is set as: utilize the accumulation of heat be stored in aqua storage tank 20 to the difference of the heat demand of the hot manufacture and thermic load 8 that absorb heat resource equipment.

But, when becoming minimum Best Point (PA1, PA2 and PA3) at evaluation function and running each heat resource equipment, the region that can run of respective heat resource equipment is narrower, sometimes can not to be stored in heat in aqua storage tank 20 to make up the insufficient section of the heat demand of thermic load 8.

Therefore, energy-saving thermal storage heat radiation scheduling determining means 34 also can adopt following formation, that is: extract rate of load condensate that and the coefficient of performance (COP) minimum from evaluation function become the different each heat resource equipment of the highest Best Point (PA1, PA2 and PA3) and become and become the little point (underload point) of the highest rate of load condensate than the coefficient of performance.

Such as, energy-saving thermal storage heat radiation scheduling determining means 34 resets underload point according to each heat resource equipment, and the rate of load condensate of this underload point becomes the ratio (such as 10% etc.) of the little regulation of the rate of load condensate of minimum Best Point than becoming evaluation function at each heat resource equipment.

In addition, being an example for setting above-mentioned " 10% " this numerical value of underload point, being not limited to this numerical value.As long as this numerical value is as based on the structure or required performance etc. of heat source system 1 and the design load set.

So energy-saving thermal storage heat radiation dispatches determining means 34 by rate of load condensate when running the heat resource equipment of a system using the rate of load condensate of new settings as the underload point PL1 shown in Fig. 4.In addition, energy-saving thermal storage heat radiation dispatches determining means 34 by the rate of load condensate of total when running the heat resource equipment of two systems using the rate of load condensate set respectively as the underload point PL2 shown in Fig. 4.And energy-saving thermal storage heat radiation dispatches determining means 34 by the rate of load condensate of total when running the heat resource equipment of three systems using the rate of load condensate reset separately as the underload point PL3 shown in Fig. 4.

As mentioned above, energy-saving thermal storage heat radiation scheduling determining means 34 selects rate of load condensate when running heat resource equipment from the rate of load condensate becoming Best Point (PA1, PA2 and PA3) and these six rate of load condensates of rate of load condensate becoming underload point (PL1, PL2 and PL3).

Fig. 5 is flow chart, and it represents: the computing of energy-saving thermal storage heat radiation scheduling determining means is used under the rate of load condensate selected from Best Point and underload point, running heat resource equipment to run the step of the traffic control (accumulation of heat heat radiation scheduling) of heat source system.

Energy-saving thermal storage heat radiation scheduling determining means 34, according to the step shown in Fig. 5, carried out computing accumulation of heat heat radiation scheduling from such as 0 o'clock to 23 o'clock with interval every two hours.

In addition, the time interval of energy-saving thermal storage heat radiation scheduling determining means 34 computing accumulation of heat heat radiation scheduling is not limited to two hours.Both can be with the structure of the time interval computing accumulation of heat heat radiation scheduling of less than two hours, also can be with the structure of the time interval computing accumulation of heat heat radiation scheduling of more than two hours.

In addition, energy-saving thermal storage heat radiation scheduling determining means 34 also can be configured to the accumulation of heat heat radiation scheduling in fixing moment every day computing amount of a day such as () at 0.

Energy-saving thermal storage heat radiation scheduling determining means 34, once the computing of accumulation of heat heat radiation scheduling, then the data (heat demand prediction data) based on the passing predicting heat demand set thermal storage time and heat radiation time (step S1).

In addition, heat demand prediction data predicts the data of the passing of the heat demand of each time based on such as passing by the change of each time of heat demand of contemporaneity.

Now, if energy-saving thermal storage heat radiation scheduling determining means 34 thermal storage time section is set as heat demand predicted must be less time period (such as night); By heat radiation the time period be set as heat demand predicted must be larger time period (such as daytime).

Next, energy-saving thermal storage heat radiation scheduling determining means 34 calculates the mean value ALOAD (step S2) of the time per unit of heat demand.The said unit interval is set as the time interval of energy-saving thermal storage heat radiation scheduling determining means 34 computing accumulation of heat heat radiation scheduling herein.Such as, when energy-saving thermal storage heat radiation scheduling determining means 34 is computings with the structure of the accumulation of heat heat radiation scheduling that is interval in two hours, the unit interval becomes two hours.

Energy-saving thermal storage heat radiation scheduling determining means 34 is using the mean value ALOAD of the mean value of the time per unit by the heat demand shown in heat demand prediction data as the time per unit of heat demand.The mean value ALOAD calculated so just becomes the normative reference of heat demand when energy-saving thermal storage heat radiation scheduling determining means 34 computing accumulation of heat heat radiation is dispatched.

In addition, the desired value (regenerative operation desired value STL) when energy-saving thermal storage heat radiation scheduling determining means 34 sets heat source system 1 regenerative operation and heat source system 1 dispel the heat the desired value (heat radiation operational objective value RTL) (step S3) when running.Energy-saving thermal storage heat radiation scheduling determining means 34, is set as above-mentioned Best Point (PA1, PA2 and PA3) or underload point (PL1, PL2 and PL3) by regenerative operation desired value STL and heat radiation operational objective value RTL.

Such as, energy-saving thermal storage heat radiation scheduling determining means 34, as initial setting regenerative operation desired value STL and heat radiation operational objective value RTL, hot manufacture when being run with the rate of load condensate of Best Point PA1 by the heat resource equipment of a system is set as regenerative operation desired value STL and heat radiation operational objective value RTL.

So, hot manufacture when the heat resource equipment of a system runs with the rate of load condensate of Best Point PA1 is set to the state of regenerative operation desired value STL and heat radiation operational objective value RTL, is described shown in following (STL:PA1, RTL:PA1).

In addition, energy-saving thermal storage heat radiation scheduling determining means 34 sets the moment (step S4) as object, and the moment of time-bands (heat radiation time-bands) that the moment set by judging is heat radiation to be run or the moment (step S5) of the time-bands of regenerative operation (thermal storage time section).In step S4, any time in the moment (0-23 point) that energy-saving thermal storage heat radiation scheduling determining means 34 sets one day.Such as, energy-saving thermal storage heat radiation scheduling determining means 34 was set to " 0 point " when the initial setting moment.

So, energy-saving thermal storage heat radiation scheduling determining means 34, when the set moment is the thermal storage time section of setting as mentioned above, judgement is the moment (step S5 → be) of regenerative operation; When other moment (heat radiation time period) in addition, judgement is the moment (step S5 → no) that heat radiation runs.

Energy-saving thermal storage heat radiation scheduling determining means 34, when the set moment is thermal storage time section (step S5 → be), calculate hot manufacture SUPPLYHEAT, the amount of stored heat SHEAT of time per unit and the residual amount of stored heat (accumulation of heat rate RATIO) (step S6) of aqua storage tank 20.On the other hand, when the set moment is the heat radiation time period (step S5 → no), energy-saving thermal storage heat radiation scheduling determining means 34 calculates hot manufacture SUPPLYHEAT, the heat dissipation capacity RHEAT of time per unit and the residual amount of stored heat (accumulation of heat rate RATIO) (step S7) of aqua storage tank 20.

Energy-saving thermal storage heat radiation scheduling determining means 34, in step s 6, calculates hot manufacture SUPPLYHEAT, amount of stored heat SHEAT and accumulation of heat rate RATIO by following formula (4) ~ (6).

SUPPLYHEAT＝STL …(4)

SHEAT＝SUPPLYHEAT-LOAD …(5)

RATIO＝(RATIO”×SCAP+SHEAT)/SCAP)×100 …(6)

LOAD: the heat demand of thermic load

RATIO ": for the accumulation of heat rate that the moment before calculates

SCAP: the regenerative capacity of aqua storage tank

Energy-saving thermal storage heat radiation scheduling determining means 34, the benchmark of the heat demand (LOAD) using the mean value ALOAD calculated in step S2 as thermic load 8.Such as, the amount of stored heat of the aqua storage tank 20 predicted from heat demand prediction data when the moment set in step S4 is more, the value lower than the mean value ALOAD in the unit interval comprising this moment is set to the heat demand (LOAD) of the thermic load 8 in this moment by energy-saving thermal storage heat radiation scheduling determining means 34, to make accumulation of heat can not be too much.Such as, when predicting that the amount of stored heat of aqua storage tank 20 is more than set upper limit threshold value, the value " ALOAD × a1/100 " that mean value ALOAD is multiplied with the slip (a1%:a1 < 100) of regulation and obtains by energy-saving thermal storage heat radiation scheduling determining means 34 is set to the heat demand (LOAD) of thermic load 8.

The slip (a1) of set upper limit threshold value and regulation is as long as be set as such as according to the design load that the structure etc. of heat source system 1 sets.

In addition, when the amount of stored heat of the aqua storage tank 20 predicted from heat demand prediction data when the moment set in step S4 is less, the value higher than the mean value ALOAD in the unit interval comprising this moment is set to the heat demand (LOAD) of thermic load 8 by energy-saving thermal storage heat radiation scheduling determining means 34, to make accumulation of heat can not be too small.Such as, when predicting that the amount of stored heat of aqua storage tank 20 is fewer than the lower threshold of regulation, the value " ALOAD × a2/100 " that mean value ALOAD is multiplied with the increment rate (a2%:a2 > 100) of regulation and obtains by energy-saving thermal storage heat radiation scheduling determining means 34 is set to the heat demand (LOAD) of thermic load 8.

The lower threshold of regulation and the increment rate (a2) of regulation are as long as be set as such as according to the design load that the structure etc. of heat source system 1 sets.

On the other hand, when the moment set is the heat radiation time period (step S5 → no), energy-saving thermal storage heat radiation scheduling determining means 34, in the step s 7, hot manufacture SUPPLYHEAT, heat dissipation capacity SHEAT and accumulation of heat rate RATIO is calculated by following formula (7) ~ (9).

SUPPLYHEAT＝RTL …(7)

RHEAT＝LOAD-SUPPLYHEAT …(8)

RATIO＝(RATIO”×SCAP-RHEAT)/SCAP)×100 …(9)

LOAD: the heat demand of thermic load

Mean value ALOAD in the unit interval being included in the moment of step S4 setting is set to the heat demand (LOAD) of thermic load 8 by energy-saving thermal storage heat radiation scheduling determining means 34.But, when the set moment is the heat radiation time period, consider the situation of electricity charge equal energy source time period costly, energy-saving thermal storage heat radiation scheduling determining means 34 also can adopt the structure of the heat demand (LOAD) value lower than mean value ALOAD being set to thermic load 8.Such as, mean value ALOAD is multiplied with the slip (a3%:a3 < 100) of regulation and the value " ALOAD × a3/100 " that obtains is set to the heat demand (LOAD) of thermic load 8 by energy-saving thermal storage heat radiation scheduling determining means 34.

The slip (a3) of regulation in this case, as long as the value that the energy expenditure (electricity charge) in this moment be such as set as by obtaining in the data from expression energy expenditure system or the structure of heat source system 1 etc. are set.

In addition, in thermal storage time section, when the accumulation of heat rate RATIO of aqua storage tank 20 exceedes " 1 ", energy-saving thermal storage heat radiation scheduling determining means 34 computing accumulation of heat heat radiation scheduling, to make end regenerative operation.Now, energy-saving thermal storage heat radiation scheduling determining means 34 calculates thermal storage time (STIME) and amount of stored heat (accumulation of heat rate RATIO) by following formula (10) ~ (12).

SHEAT’＝SHEAT-SCAP×(RATIO-100)/100 …(10)

STIME＝(SHEAT’/SHEAT)×100 …(11)

RATIO’＝100 …(12)

SHEAT ': the amount of stored heat calculated again

RATIO ': the accumulation of heat rate calculated again

When the moment set in step S4 is not final moment (such as 22 points) of one day (step S8 → no), step is turned back to step S4 by energy-saving thermal storage heat radiation scheduling determining means 34.On the other hand, when the set moment is the final moment (step S8 → be), energy-saving thermal storage heat radiation scheduling determining means 34 when all moment accumulation of heat rate for more than " 0 " and " 1 " below (step S9 → be), terminate the computing of accumulation of heat heat radiation scheduling.On the other hand, when the accumulation of heat rate in all moment be not more than " 0 " and " 1 " below (step S9 → no), energy-saving thermal storage heat radiation scheduling determining means 34 step is turned back to step S3 come computing accumulation of heat heat radiation scheduling.

Such as, when the unit interval is two hours, energy-saving thermal storage heat radiation scheduling determining means 34 performs the step union accumulation of heat of day heat radiation scheduling of 12 step S4 to step S8.

Energy-saving thermal storage heat radiation scheduling determining means 34, when step is turned back to step S3, hot manufacture when the heat resource equipment of a system runs with the rate of load condensate of Best Point PA1 is set to regenerative operation desired value STL and heat radiation operational objective value RTL, namely at (STL:PA1, RTL:PA1) when, make regenerative operation desired value STL constant, hot manufacture when being run with the rate of load condensate of underload point PL1 by the heat resource equipment of a system is set to heat radiation operational objective value RTL.That is, energy-saving thermal storage heat radiation scheduling determining means 34 is set as the state of (STL:PA1, RTL:PL1).

And, energy-saving thermal storage heat radiation scheduling determining means 34 is when turning back to step S3 step, be set to (STL:PA1, when state RTL:PL1), make regenerative operation desired value STL constant, hot manufacture when being run with the rate of load condensate of Best Point PA2 by the heat resource equipment of two systems (is called the hot manufacture at Best Point PA2 place.Below, Best Point, underload point about other are also identical) be set as heat radiation operational objective value RTL.That is, energy-saving thermal storage heat radiation scheduling determining means 34 is set to the state of (STL:PA1, RTL:PA2).

As mentioned above, when step is turned back to step S3 by energy-saving thermal storage heat radiation scheduling determining means 34 at every turn, just under regenerative operation desired value STL is remained constant state, heat radiation operational objective value RTL is made to change to the hot manufacture at underload point PL3 place from the hot manufacture of Best Point PA1.That is, energy-saving thermal storage heat radiation scheduling determining means 34 changes to the state of (STL:PA1, RTL:PL3) from the state of (STL:PA1, RTL:PA1).

In between, when the accumulation of heat rate in all moment all become more than " 0 " and " 1 " below (step S9 → be), energy-saving thermal storage heat radiation scheduling determining means 34 terminate accumulation of heat heat radiation scheduling computing.Then, the accumulation of heat rate in all moment is become more than " 0 " and " 1 " below time the regenerative operation desired value STL in each moment and heat radiation operational objective value RTL be set to the operational objective (hot manufacture) in respective moment.

On the other hand, when changing to during the hot manufacture at underload point PL3 place at heat radiation operational objective value RTL, the accumulation of heat rate in all moment all do not become more than " 0 " and " 1 " below time (step S9 → no), energy-saving thermal storage heat radiation scheduling determining means 34, when step is turned back to step S3, regenerative operation desired value STL is set as the hot manufacture at underload point PL1 place; Heat radiation operational objective value RTL is set as the hot manufacture at Best Point PA1 place.That is, energy-saving thermal storage heat radiation scheduling determining means 34 becomes the state of (STL:PL1, RTL:PA1).

So, energy-saving thermal storage heat radiation scheduling determining means 34, until the accumulation of heat rate in all moment become " 0 " and above " 1 " below, make heat radiation operational objective value RTL change to the hot manufacture of underload point PL3 from the hot manufacture of Best Point PA1 always.

Further, during this period, when the accumulation of heat rate in all moment become more than " 0 " and " 1 " below (step S9 → be), energy-saving thermal storage heat radiation scheduling determining means 34, terminate accumulation of heat heat radiation scheduling computing.Then, the accumulation of heat rate in all moment is become more than " 0 " and " 1 " below time the regenerative operation desired value STL in each moment and heat radiation operational objective value be set to the operational objective (hot manufacture) in respective moment.

As mentioned above, energy-saving thermal storage heat radiation scheduling determining means 34, makes regenerative operation desired value STL change in order from the hot manufacture of Best Point PA1 to the hot manufacture at underload point PL3 place respectively with heat radiation operational objective value RTL.Namely, energy-saving thermal storage heat radiation scheduling determining means 34, make from (STL:PA1, RTL:PA1) state plays (STL:PL3, RTL:PL3) state changes in order, during this period, when the accumulation of heat rate in all moment become more than " 0 " and " 1 " below (step S9 → be), terminate accumulation of heat heat radiation scheduling computing.

Further, the accumulation of heat rate in all moment is all become more than " 0 " " 1 " below time regenerative operation desired value STL and the heat radiation operational objective value RTL in each moment be set to the operational objective (hot manufacture) in respective moment.

In addition, even if changing to (STL:PL3, RTL:PL3) state, the accumulation of heat rate in all moment also can not become more than " 0 " and " 1 " below when (step S9 → no), regenerative operation desired value STL and heat radiation operational objective value RTL is set as the hot manufacture at underload point PL3 place by energy-saving thermal storage heat radiation scheduling determining means 34 respectively.That is, the state of (STL:PL3, RTL:PL3) is set to.

As mentioned above, energy-saving thermal storage heat radiation scheduling determining means 34, when step is turned back to step S3, just to being set to combination, the i.e. Best Point (PA1 of regenerative operation desired value STL with the hot manufacture of heat radiation operational objective value RTL, PA2, PA3) and underload point (PL1, PL2, PL3) combination change order, performs the step that step S4 is later.

So, energy-saving thermal storage heat radiation scheduling determining means 34, when the accumulation of heat rate in all moment all become more than " 0 " and " 1 " below time (step S9 → be), regenerative operation desired value STL and heat radiation operational objective value RTL is set as the operational objective value (hot manufacture) of heat resource equipment.

As mentioned above, energy-saving thermal storage heat radiation scheduling determining means 34, carrys out computing accumulation of heat heat radiation scheduling according to the step of the flow chart shown in Fig. 5.

So, energy-saving thermal storage heat radiation scheduling determining means 34, the accumulation of heat rate RATIO in all moment is become more than " 0 " " 1 " below time regenerative operation desired value STL and heat radiation operational objective value RTL determine the desired value (hot manufacture) of the operation of the heat resource equipment for each moment.Then, energy-saving thermal storage heat radiation scheduling determining means 34, informs to heat source system control unit 31 by determined regenerative operation desired value STL and heat radiation operational objective value RTL.

Heat source system control unit 31 computing is used for the controlled quentity controlled variable controlling each heat resource equipment (the first system 1a, second system 1b, the 3rd system 1c) based on notified regenerative operation desired value STL and heat radiation operational objective value RTL, and, with the controlled quentity controlled variable control of heat source equipment of institute's computing.That is, in the present embodiment, heat source system control unit 31 plays the function as the operation control unit running heat resource equipment.

Such as, when predicting the change of heat demand shown in the solid line of such as Fig. 6, based on the change of this heat demand, shown in dotted line, regenerative operation desired value STL and heat radiation operational objective value RTL is decided by energy-saving thermal storage heat radiation scheduling determining means 34 (with reference to Fig. 2).

Energy-saving thermal storage heat radiation scheduling determining means 34, is set as thermal storage time section by before moment T1 with after moment T2, will be set as the time period of dispelling the heat during moment T1 to moment T2.Further, energy-saving thermal storage heat radiation scheduling determining means 34, is set as the underload point PL2 during heat resource equipment of operation two systems by the regenerative operation desired value STL of thermal storage time section.

Heat source system control unit 31, runs the heat resource equipment of two systems setting higher by the priority of operation in thermal storage time section with the rate of load condensate of underload point PL2.

In thermal storage time section, with the heat shown in oblique line by the operation of heat resource equipment by accumulation of heat to aqua storage tank 20 (reference Fig. 1).

In addition, although the regenerative operation desired value STL describing thermal storage time section is in figure 6 all by the example equally set, be not limited thereto.Even if in thermal storage time section, regenerative operation desired value STL sometimes also can be different according to the difference in each moment.

Energy-saving thermal storage heat radiation scheduling determining means 34, at heat radiation time period (moment T1 ~ T2), such as, will be set as when the hot manufacture when the heat resource equipment of a Best Point PA1 operation system from the heat radiation operational objective value RTL moment T1 to moment T11; The hot manufacture when the heat resource equipment of Best Point PA2 operation two systems will be set as from the heat radiation operational objective value RTL moment T11 to moment T12.

In addition, energy-saving thermal storage heat radiation scheduling determining means 34, will be set as when the hot manufacture when the heat resource equipment of underload point PL3 operation three systems from the heat radiation operational objective value RTL moment T12 to moment T13; The hot manufacture when the heat resource equipment of Best Point PA2 operation two systems will be set as from the heat radiation operational objective value RTL moment T13 to moment T15.

And energy-saving thermal storage heat radiation scheduling determining means 34, is set as the hot manufacture when the heat resource equipment of Best Point PA1 place's operation system by the heat radiation operational objective value RTL between moment T15 to moment T2.

Heat source system control unit 31, from moment T1 to moment T11, runs the heat resource equipment of the system setting the highest by the priority of operation with the rate of load condensate of Best Point PA1; From moment T11 to moment T12, run the heat resource equipment of two systems setting higher by the priority of operation with the rate of load condensate of Best Point PA2.

In addition, heat source system control unit 31, from moment T12 to moment T13, runs the heat resource equipment of three systems with the rate of load condensate of underload point PL3; From moment T13 to moment T15, run the heat resource equipment of two systems setting higher by the priority of operation with the rate of load condensate of Best Point PA2.

And heat source system control unit 31, from moment T15 to moment T2, runs the heat resource equipment of the system setting the highest by the priority of operation with the rate of load condensate of Best Point PA1.

In heat radiation time period (T1 ~ T2), the heat being equivalent to the hot manufacture produced by the operation of heat resource equipment is provided to thermic load 8 (with reference to Fig. 1), and is consumed as heat demand.And, the heat of the part of heat demand can not being met for hot manufacture, control device 13 control of heat source system 1, making up to make the heat (aqua storage tank heat dissipation capacity) by providing from aqua storage tank 20 (with reference to Fig. 1).

Specifically, as mentioned above, control device 13 (with reference to Fig. 1) determines the supply of the cold water W3 providing hot manufacture can not meet the heat of the part of heat demand from aqua storage tank 20 to thermic load 8, and control heat pump 21 (with reference to Fig. 1), to make to provide cold water W3 from aqua storage tank 20 to thermic load 8 with determined supply.

The heat (being equivalent to hot manufacture) produced due to the operation of heat resource equipment is provided to thermic load 8 (with reference to Fig. 1) with the heat (being equivalent to heat storage tank heat dissipation capacity) of accumulation of heat in aqua storage tank 20 (with reference to Fig. 1), and is consumed as heat demand.

As mentioned above, as shown in Figure 1, the heat source system 1 relating to the present embodiment has the heat resource equipment of three systems of the first system 1a, second system 1b and the 3rd system 1c.So the control device 13 that heat source system 1 has, according to the change of heat demand or the wet-bulb temperature etc. of extraneous gas, setting runs the priority of heat resource equipment, becomes the highest to make the coefficient of performance of heat source system 1 (COP).

In addition, control device 13 based on set heat resource equipment priority and predict the heat demand prediction data of change of heat demand, determine the traffic control (accumulation of heat heat radiation scheduling) running heat source system 1 (heat resource equipments of three systems), become the highest to make the coefficient of performance (COP) of whole heat source system 1.And control device 13 runs the heat resource equipment of three systems based on determined accumulation of heat heat radiation scheduling.

According to this structure, the heat source system 1 of the heat resource equipment with three systems can be run with the higher coefficient of performance.

That is, the heat source system 1 of the present embodiment can decide based on heat demand prediction data the accumulation of heat heat radiation scheduling running heat source system 1, and according to the change of the heat demand of thermic load 8, can run when maintaining superior performance coefficient.

In addition, the present invention is not limited to above-described embodiment or variation.Such as, the content that above-described embodiment just describes in detail for ease of understanding the present invention is not be defined as necessarily to have illustrated all structures.

In addition, a part for the structure of a certain embodiment also can be replaced as the structure of other embodiments, in addition, also can increase the structure of other embodiments in the structure of a certain embodiment.

Such as, heat resource equipment is also not limited only to three systems, in the heat source system 1 (with reference to Fig. 1) of heat resource equipment with more than four systems, also can use the present invention.

In this case, control device 13 also can adopt and utilize formula (3) to calculate evaluation function EF ' for all heat resource equipments, and presses the structure of the priority of the operation of evaluation function EF ' order setting heat resource equipment from small to large.

In addition, the present embodiment adopts: the underload point setting a point in each heat resource equipment, sets the structure of the underload point (PL1, PL2, PL3) of three points at the heat resource equipment of three systems.But, also can adopt: the structure of the underload point that setting two points are above in each heat resource equipment.

In addition, also can adopt: do not set underload point but run the structure of rate of load condensate of each heat resource equipment based on Best Point (PA1, PA2, PA3) setting.

In addition, have employed in the present embodiment: energy-saving thermal storage heat radiation scheduling determining means 34, be used for the structure of the accumulation of heat heat radiation scheduling of a day at 0 in fixing moment every day computing such as ().But, be also not limited to this structure.

Such as, also can adopt: energy-saving thermal storage heat radiation scheduling determining means 34, the fixed time of in every month fixing a day (No. 1 etc.) computing such as (0) is used for the structure of the accumulation of heat heat radiation scheduling of month.

In the case of that construction, preferably adopt: energy-saving thermal storage heat radiation scheduling determining means carries out the structure of the step shown in flow chart of Fig. 5 for 34, one month repeatedly.

In addition, the present invention is not limited to above-described embodiment, as long as just can carry out suitable design alteration without departing from the scope of spirit of the present invention.

Description of reference numerals

1 heat source system

1a the first system (heat resource equipment)

1b second system (heat resource equipment)

1c the 3rd system (heat resource equipment)

4a inverter turborefrigerator (refrigeration machine)

4b turborefrigerator (refrigeration machine)

4c waste heat utilization absorbs cold warm water machine (refrigeration machine)

13 control device

20 aqua storage tanks (heat storage tank)

21 heat pump

31 heat source system control units (operation control unit)

32 analogue units

33 energy-saving runs order computing unit (priority setup unit)

34 energy-saving thermal storages heat radiation scheduling determining means (scheduling determining means)

W3 cold water

Claims

1. a heat source system, is characterized by, and comprising:

There is the heat resource equipment of at least two systems of refrigeration machine;

Analogue unit, carrys out operational performance coefficient according to each described heat resource equipment;

Priority setup unit, according to the order of the higher described heat resource equipment of the highest described coefficient of performance, sets higher by the priority of operation;

Scheduling determining means, based on the prediction of the change of the heat demand in thermic load, by traffic control decision is: be set higher described heat resource equipment from described priority and at first run; And

Run control unit, run described heat resource equipment based on described traffic control.

2. heat source system according to claim 1, is characterized by,

Described heat source system also has the heat storage tank of the heat accumulation of heat manufactured by described heat resource equipment,

Described traffic control determines by described scheduling determining means: become the rate of load condensate of the regulation of the highest rate of load condensate to run described heat resource equipment to comprise the described coefficient of performance, and utilizes the accumulation of heat of described heat storage tank to absorb the difference of the heat demand in the hot manufacture of described heat resource equipment and described thermic load.

3. heat source system according to claim 2, is characterized by,

Described traffic control determines by described scheduling determining means: produce in described thermic load described heat demand the heat radiation time period and in the thermal storage time section of the heat accumulation of heat will manufactured in described heat resource equipment to described heat storage tank, the rate of load condensate becoming the regulation of the highest rate of load condensate to comprise the described coefficient of performance respectively runs described heat resource equipment.

4. heat source system according to claim 2, is characterized by,

Described heat storage tank is the aqua storage tank storing cold water cooled in described heat resource equipment.

5. heat source system according to claim 3, is characterized by,

6. the heat source system according to claim 4 or 5, is characterized by,

Described heat source system has the heat pump described cold water be stored in described aqua storage tank being supplied to described thermic load,

Described heat pump is configured to regulate the quantity delivered of the described cold water being supplied to described thermic load.

7. the heat source system according to any one of claim 1 to 5, is characterized by,

Described scheduling determining means decides described traffic control based on the prediction data predicting the change of described heat demand of setting in advance.

8. heat source system according to claim 6, is characterized by,