LU501309B1

LU501309B1 - Air source heat pump-solar combined heating/cooling system

Info

Publication number: LU501309B1
Application number: LU501309A
Authority: LU
Inventors: Chang Liu
Original assignee: Univ Yantai
Priority date: 2022-01-24
Filing date: 2022-01-24
Publication date: 2022-08-09

Abstract

The present invention discloses an air source heat pump-solar combined heating/cooling system. The combined heating system comprises a solar heat collection plate, a heated water storage tank, an air source heat pump unit, a water pump, an electric heater, a fan coil pipe or a radiation cold plate end and a plurality of electromagnetic valves. Through the unique connection and control, a complementary heating system of solar + air source + electric auxiliary can be realized in winter; and in summer, the heat pump system can separately provide cooling and the solar system provides domestic hot water. The present invention embodies the complementarity and synergy of solar energy and air source heat pump, and achieves the purpose of clean and efficient heating through unique connection mode, reasonable configuration and intelligent operation mode. It has important significance for promoting the green transformation of heating system, implementing and practicing the concept of ecological civilization, promoting energy revolution and improving air quality.

Description

AIR SOURCE HEAT PUMP-SOLAR COMBINED HEATING/COOLING LUS01309

SYSTEM TECHNICAL FIELD

[01] The present invention belongs to the technical field of clean heating and renewable energy utilization, and particularly relates to a multi-element complementary combined heating/cooling system, and more particularly to an air source heat pump- solar combined heating/cooling system.

BACKGROUND ART

[02] The main types of heat sources in China comprises cogeneration, centralized boiler room and decentralized boiler room, as well as industrial waste heat, geothermal heat pump, domestic electric heater and small coal-fired (oil, gas) furnace. Cogeneration and centralized boiler house, as central heating modes, are the main development direction of urban heat supply. However, building heating mode mainly based on coal- fired boiler and cogeneration is one of the main factors causing air pollution in winter. Solar energy and air energy have the characteristics of wide distribution, inexhaustible and environmental friendliness, which are effective resources to achieve sustainable clean heating. However, the low flow density of solar energy is greatly affected by light intensity and weather factors, while the heating capacity and performance coefficient of air source heat pump vary greatly with the external environment temperature. Considering the influence of frost and other factors, it is difficult to meet the needs of large-scale clean heating when they are used alone.

[03] The applicant, after earlier retrieval of relevant literatures, found that, a single heating way cannot well meet the requirements of clean heating due to the limitation of many factors. The combination of multiple heat sources provides an effective way for us. In China, there have been many practices in using geothermal energy, solar energy, biomass energy, water source heat pump and industrial waste heat for heating. On the basis of research and application at home and abroad, the present invention proposes a heating mode with solar energy and heat pump system as the main body and combined with auxiliary electric heating, which can effectively integrate traditional energy and renewable energy into a heating system, reducing the configuration of main assembly, optimizing the investment rhythm, maximizing the effectiveness of each type of energy and reducing the dependence on traditional energy such as coal.

[04] Both air pollution and winter heating are related to people’s livelihood, how to reduce pollution emissions without affecting heating is of the most important. Under the background of green development, it is of great significance to study and establish combined energy heating system and promote green transformation of heating system to implement and practice the concept of ecological civilization, promote energy revolution and improve air quality.

SUMMARY

[05] In order to solve the above-mentioned technical problem, the object of the present invention is to provide an air source heat pump-solar combined heating/cooling 1 system capable of realizing two operation modes in winter and summer, ie, a LU501309 complementary heating system of solar + air source + electric auxiliary can be realized in winter; and in summer, the heat pump system can separately provide cooling and the solar system can provide domestic hot water.

[06] In order to achieve the above object, the present invention adopts the following technical scheme:

[07] An air source heat pump-solar combined heating/cooling system, comprises a solar heat collection plate 1, a heat storage water tank 2, an auxiliary electric heater 3, a water pump I 4, an air source heat pump unit 5, an air source heat pump unit 6, a valve I 7, a valve II 8, a valve III 9, electromagnetic valves 10, a water pump II 11, an end system 12, a fan coil system 13 and a radiation cold plate system 14.

[08] The solar energy collection system is used for absorbing solar radiation energy and converting same into thermal energy. The air source heat pump extracts heat from the outdoor air, raises its temperature, and delivers same to the indoor so as to achieve the purpose of heating. When extreme weather is encountered, an electric heater is used for auxiliary heating when the heating amount is insufficient. Through the unique connection mode, reasonable configuration and intelligent operation mode, the purpose of clean and efficient heat supply is achieved. Heating can be provided in winter, while air conditioning for cooling can also be provided in summer; and sanitary hot water can be provided throughout the year as needed.

[09] The prominent substantive features of the present invention lie in the two operation modes for winter and summer, which respectively can satisfy the functions of providing heat, cooling and domestic hot water. Further, in an area with time-of-use electricity price, according to the peak-valley electricity price policy, operation costs can be reduced by using valley electricity for heat storage, and using a heat supply + heat storage mode of the air source heat pump at night.

[10] Advantageous Effects

[11] (1) The present invention realizes two operation modes in winter and summer through a unique connection manner and control, i.e., a complementary heating system of solar + air source + electric auxiliary can be realized according to different outdoor environmental conditions in winter, and in summer, the heat pump system can separately provide cooling by pipeline control, and the solar system can provide domestic hot water.

[12] (2) In an area with time-of-use electricity price, according to the peak-valley electricity price policy, operation costs can be reduced by using valley electricity for heat storage, and using a heat supply + heat storage mode of the air source heat pump at night.

[13] (3) The present invention can reduce pollution emissions without affecting heating, which is of great significance to implement and practice the concept of ecological civilization, promote energy revolution and improve air quality.

[14] Additional features and advantages of the present invention will be set forth in the following detailed description, and in part will be apparent from the description, or may be learned by implementing the present invention. The objective and other advantages of the present invention may be realized and attained by the structure 2 particularly pointed out in the description and claims as well as the appended drawings. LU501309

BRIEF DESCRIPTION OF THE DRAWINGS

[15] The accompanying drawings, which are included to provide a further understanding of the present invention and are incorporated in and constitute a part of the description, serve to explain the principles of the present invention together with the description and are not to be construed as limiting the invention.

[16] FIG. 1 shows a schematic diagram of an air source heat pump-solar combined heating/cooling system of the present invention.

[17] Wherein: 1-solar heat collecting plate; 2-heat storage water tank; 3-auxiliary electric heater; 4-water pump; S-air source heat pump unit, 6-water supplementing system; 7-valve I; 8-valve II; 9-valve III, 10-electromagnetic valve; 11-water pump II; 12-end system; 13-fan coil system; and 14-radiation cold plate system.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[18] The structural principles of the present invention are further illustrated by the following specific examples taken in conjunction with the accompanying drawings, which illustrate preferred examples of the present invention and are non-limiting and thus are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the present invention described herein may be modified to still achieve the beneficial effects of the present invention. Accordingly, the following description should be construed as broadly as known to those skilled in the art, and not as a limitation on the present invention.

[19] In the interest of clarity, not all features of an actual example are described. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. It should be appreciated that in the development of any such actual example, numerous implementation details must be set forth in order to achieve the developers’ specific goals.

[20] In order to make the above objectives, and features of the present invention more obvious and understandable, the present invention will be further described below with reference to the accompanying drawings. It is to be noted that the drawings are in a very simplified form and are intended to represent non-precise ratios, merely for convenience and to clearly illustrate examples of the present invention.

[21] Example 1:

[22] I) The operation modes of the system are divided into winter and summer operation modes, which respectively satisfy the functions of providing heat, cooling and domestic hot water.

[23] (1) When heating in winter, valve II is turned off, and valve I and valve III are turned on. The solar energy is preferentially used during daytime. An air source heat pump is started to provide heat when the requirements are not met. In extreme cases, an auxiliary electric heater 1s started. The air source heat pump 1s started to provide heat at night. In an area with time-of-use electricity price, valley electricity can be used for heat storage of a heated water storage tank under the condition of meeting the requirements 3 of building heat load during the valley electricity time. The solenoid valve can be turned LU501309 on to achieve the full heat storage mode.

[24] (2) When cooling in summer, valve I and valve III are turned off, and valve II are turned on, which can be divided into two independent systems. The air source heat pump can provide cooling to buildings and solar energy + heated water storage tank can provide domestic hot water.

[25] ID) In an area with time-of-use electricity price, according to the peak-valley electricity price policy, operation costs can be reduced by using valley electricity for heat storage, and using a heat supply + heat storage mode of the air source heat pump at night.

[26] (1) The air source heat pump can provide heat both the residential building and the heat storage water tank under the suitable conditions of the outdoor ambient temperature at night;

[27] (2) The air source heat pump can provide heat to the residential building and the electric auxiliary heater is started for heat storage when the outdoor ambient temperature is low at night;

[28] (3) When the air source heat pump cannot meet the heating demand under the extreme harsh conditions of outdoor environment at night, the electric auxiliary heater can be started.

[29] (4) In daytime, the heated water in the heated water storage tank and solar energy can be preferentially used to provide heat to residential buildings, and the air source heat pump can be started to provide heat when the requirements are not met.

[30] Although the preferred example of the present invention has been described in detail, it is not limited to the specific details of the above example, and various equivalent modifications may be made to the technical solution of the present invention within the scope of the technical concept of the present invention, which fall within the scope of the present invention.

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Claims

WHAT IS CLAIMED IS: LUS01309

1. An air source heat pump-solar combined heating/cooling system, characterized by comprising a solar energy heat collection system, an air source heat pump cold/hot water system, a heat storage system and an end system, wherein: the solar heat collection system comprises a solar heat collection plate; the heat storage system comprises a heated water storage tank; and the air source heat pump cold/hot water system comprises an air source heat pump unit.

2. The air source heat pump-solar combined heating/cooling system of claim 1, characterized in that, the solar heat collecting plate is connected to the heated water storage tank via a circulation pipeline, and the solar heat collecting plate is configured to heat cold water and deliver the heated water to the heated water storage tank.

3. The air source heat pump-solar combined heating/cooling system of claim 1, characterized in that, the air source heat pump unit is connected to the end system, and the air source heat pump unit is configured to absorb heat from the air to heat water circulating therein and to deliver the heated water to the heated water storage tank.

4. The air source heat pump-solar combined heating/cooling system of claim 1, characterized in that, the air source heat pump unit is connected to the end system, and the air source heat pump unit is configured to absorb heat from the air to heat water circulating therein and to deliver the heated water to the end system.

5. The air source heat pump-solar combined heating/cooling system of claim 1, characterized by further comprising an electric heating device for auxiliary heating in case of insufficient heating.

6. The air source heat pump-solar combined heating/cooling system of claim 1 or 4, characterized in that, the end system is installed in a room requiring heating to provide heat to the room.

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