JPS6029861B2 - Solar heating/cooling/water heating equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an air-conditioning/heating water supply device with an air-conditioning cycle using solar heat as a heat source, and is intended to save energy by efficiently supplying hot water in an air-conditioning/heating system using solar heat, and to reduce initial cost. The purpose of this project is to achieve early recovery.

Conventional air conditioning and heating systems using solar heat as a heat source use solar thermal panels that act as a condenser during cooling and an evaporator during heating.Refrigerant is sent directly to these solar panels, and the heat of condensation of the refrigerant is transferred during cooling. Some cooling cycles are configured with solar thermal panels so that the heat is radiated to the atmosphere and becomes condensed cold soot, and during heating, the heat of evaporation of the refrigerant is absorbed from the sun's heat and the atmosphere and becomes soot gas. .

On the other hand, when hot water is supplied during heating, the condensed heat of cold soot is used to supply hot water through a hot water heat exchanger, and hot water for heating is obtained through a heating heat exchanger, and when hot water is supplied during cooling, hot water is supplied using the condensed heat of the lining medium. However, solar heat is not used efficiently throughout the year, and hot water is only produced using a heat exchanger for hot water supply, so even if there is sufficient solar heat, the It has the disadvantage that it often relies on driving, which is not desirable from the standpoint of energy conservation. The present invention solves the above-mentioned conventional drawbacks, and embodiments thereof will be described below with reference to the drawings. 1
is a refrigerating machine unit, which is equipped with a compressor 2, a four-way valve 3, and an expansion valve 4.

5a and 5b are solar thermal panels; these solar thermal panels 5a,
5b is a refrigerant flow path pipe 6a, 6b, a hot water flow path pipe 7a,
It is composed of two circuits consisting of 7b and 7b.

8 is a cold storage heat tank, and a cold soot heat exchanger 9 and a hot water heat exchanger 10 are provided.

11 and 12 are pipes connected to the cold storage heat storage tank 8 and a fan coil unit (not shown), and a circulation pump 13 is provided in the middle.

Reference numeral 14 denotes a storage tank for storing hot water for supplying hot water to bathtubs, kitchens, etc., and a water supply pipe 16 is provided via a pump 15.

17 is an electric heater provided in the wound storage tank 14, 18, 19
is a three-way valve, and is provided so that water can be selectively passed between the hot water heat exchanger 10 in the cold storage heat tank 8 and the hot water flow path pipes 7a and 7M of the solar thermal panels 5a and 5b.

A circulation pump 21 and 22 connect the hot water storage tank 14 and the solar thermal panels 5a and 5b, and 23 and 24 a circulation pump that connects the hot water storage tank 14 and the cold storage heat storage tank 8. This is water piping.

In the above configuration, during cooling, the solar panels 5a, 5
Although the refrigerant flow passage pipes 6a and 6b of b act as a condenser,
Since there is little condensation effect when solar heat is received during the day, air conditioning is operated at night.

That is, the compressor 2, the four-way valve 3, the cold soot flow passage pipes 6a and 6b of the solar thermal panels 5a and 5b, the expansion valve 4, the cold soot heat exchanger 9 of the cold storage heat tank 8, the four-way valve 3, and the compressor 2 in this order. The cold soot flows, cold water is produced in the cold soot heat exchanger 9, and the cold water is stored in the cold storage heat tank 8, which covers almost the entire day's cooling load. Next, at the time of supply and damage, solar thermal panels 5a and 5
Hot water is made in the hot water flow path pipes 7a and 7b of b, and the wound storage tank 14 is
The wound accumulates in the body and is delivered to the bathtub, kitchen, etc. by the pump 15.

At this time, when it is impossible to receive solar heat due to cloudy or rainy weather, cooling operation is performed to transfer the condensation heat of the cold soot in the cold soot flow passage pipes 6a and 6b to the hot water flow passage pipes 7a and 7b,
Scarlet heat from the cooling operation can be recovered into the hot water storage tank 14 as a heat source for hot water supply, and if the water temperature in the hot water storage tank 14 is low at night, the hot water can be preheated by passing water through the panels 5a and 5b. becomes. Next, during heating, when receiving solar heat, or during cloudy days or at night, a heat pump operation that can absorb heat from the atmosphere is performed, and the compressor 2, the four-way valve 3, the cold soot heat exchanger 9 of the cold storage heat tank 8, and the expansion Valve 4, solar panels 5a, 5
The cold soot is passed through the cold soot flow passage pipes 6a and 6b, the four-way valve 3, and the compressor 2 in this order, the cold soot heat exchanger 9 produces hot water, and the pump 13 sends the water to the load side for heating. be.
At this time, if some cause increases and there is no margin in the equipment capacity, the pump 20' will cause the three-way valves 18, 19 to pass water to the hot water heat exchanger 10 side, and the water pipes 23, 2
4, the hot water for supplying wounds heated by the heater 7 in the storage tank 14 is sent to the cold storage heat tank 8, and the water heat exchanger 10 exchanges heat with the water in the cold storage heat tank 8, raising the heating hot water. Heating can be performed by sending hot water to the load side using the warming pump 13. Next, during the intermediate period, if solar heat reception is possible, the three-way valves 18 and 19 are made to flow toward the storage tank 14 to store hot water produced by the solar thermal panels 5a and 5b in the storage tank 14.

In addition, when solar heat reception is not possible, the refrigerator unit is operated for heating, the cold soot heat exchanger 9 is used to generate hot water, and the three-way valves 18 and 19 are used to pass water between the storage tank 14 and the cold storage tank 8. The pump 20 is operated in this manner, the hot water in the cold storage heat tank 8 is heat exchanged with the hot water heat exchanger 10, and the hot water is stored in the hot water tank 14 and used for picture temperature. Therefore, in the intermediate period, hot water for hot water supply is obtained without using the heater 17. As described above, according to the present invention, since the solar thermal panel has a two-circuit configuration of a cold soot flow passage pipe and a hot water flow passage pipe, it is possible to use solar heat as a heat source when operating a refrigerator unit, and also to use water as a heat source when operating a refrigerator unit. can also collect heat,
Hot water can be supplied at low cost during the mid-season and summer months when solar heat is available. In addition, the scarlet heat generated during cooling can be used for hot water supply, the heat pump operation of the refrigerator unit serves as an auxiliary heat source for hot water supply, and the hot water heater can be used as an auxiliary heat source for heating, making each device more efficient. It can be used for. In addition, by making the solar thermal panel into a two-circuit configuration, there is no need to install a solar thermal panel for the refrigerator unit and a solar thermal panel for hot water supply separately, making it possible to lower the overall initial cost and provide solar thermal power throughout the year. This has the effect of increasing dependence on electricity, allowing early recovery of initial costs, and contributing to energy conservation. A simple explanatory diagram of the drawing is a system configuration diagram of a solar heating/cooling system according to the present invention.

1... Refrigerator unit, 2... Compressor, 3
...Four-way valve, 4...Expansion valve, 5a, 5
b...Solar thermal panel, 6a, 6b...
Cold soot flow path pipes, 7a, 7b...Hot water flow path pipes
8... Cold storage heat tank, 9... Refrigerant heat exchanger,
10... Hot water heat exchanger, 14... Hot water storage tank,
16... Supply and damage piping, 17... Heater, 18,
19...Three-way valve.

Claims (1)

[Claims] 1 A refrigerator unit with a compressor, a four-way valve, an expansion valve, etc., a solar thermal panel configured with two circuits of a refrigerant flow path pipe and a hot water flow path pipe, a refrigerant heat exchanger and a hot water heat exchanger. A cold storage heat tank that supplies water to loads such as radiators, a hot water storage tank connected in parallel via a three-way valve that switches the hot water flow path between the hot water flow path pipe of the solar thermal panel and the hot water heat exchanger of the cold storage heat tank, and the hot water storage tank. A solar heating, cooling, and hot water supply system that uses solar heat and consists of a heater and hot water supply piping.