Hot-water and heating-cooling room supply system

Abstract

The present invention relates to a hot-water and heating-cooling room supply system, which can supply hot water having a certain temperature and realize heating-cooling room supply at the same time by recovering waste heat from water hot water or using heat sources such as external air, terrestrial heat, and the like. The system comprises a heat exchanging portion and a cold accumulation / heat accumulation portion. The heat exchanging portion comprises a first heat exchanger for carrying out heat exchange with the waste hot water, external air or terrestrial heat, and a second heat exchanger connected to the first heat exchanger by a refrigerant circulating pipeline and connected with a hot water supplying pipeline or a heating-cooling room supplying pipeline. The circulating pipeline can lead the circulating water to flow out from the lower part of a cold-hot water tank and flow in from the upper part; the hot water supplying pipeline or the heating-cooling room supplying pipeline is connected to the upper part of the cold-hot water tank; the circulating pipeline is provided with a circulating pump which can be changed flow by a controller, the circulating pump can adjust the supply amount of the circulating water supplied to the entrance side of the second exchanger.

Description

technical field [0001] The present invention relates to hot water and cooling and heating room supply system. Specifically, it relates to recovering waste heat from waste hot water or using external air, geothermal heat and other heat sources to supply hot water above a certain temperature, and realize the hot water and cooling and heating room supply system for cooling and heating rooms at the same time. Background technique [0002] Generally speaking, boilers or cooling and heating equipment driven by electricity or fossil fuels are often used in bathhouses or accommodation facilities to supply hot water or cooling and heating rooms. Waste, resource reuse efficiency is very low. [0003] In order to improve the above problems, in recent years, a heat pump heat exchange system has been developed that recovers waste heat from waste hot water or uses other alternative resources to supply heat, and supplies hot water and cooling and heating rooms. And structural problems, wa...

AI Technical Summary

Problems solved by technology

[0002] Generally speaking, boilers or cooling and heating equipment driven by electricity or fossil fuels are often used in bathhouses or accommodation facilities to supply hot water or cooling and heating rooms. Waste, resource reuse efficiency is very low

[0003] In order to improve the above problems, in recent years, a heat pump heat exchange system has been developed that recovers waste heat from waste hot water or uses other alternative resources to supply heat, and supplies hot water and cooling and heating rooms. And structural problems, waste heat recovery capacity or other heat source recovery capacity is low, hot water or heating and cooling cannot be normally supplied, so it cannot fully replace electricity or fossil fuels, or reduce resource consumption

[0004] For example, in the past, equipment for recovering waste heat from waste hot water, in order to prolong the residence time of waste hot water in the waste heat recovery tank, the waste hot water flows in from the bottom of the recovery tank and is discharged from the top. When there are too many, it will cause the waste hot water above the relatively high temperature recovery tank to be discharged without sufficient heat exchange.

[0005] In addition, in the conventional hot water supply system that uses the above-mentioned waste heat recovery equipment to supply hot water, a circulation pump with a certain discharge volume must be installed between the hot water tank and the heat pump. When the circulation pump continues to deliver a certain amount of cold water, due to the The heat exchange capacity of the heat pump is limited, so that the cold water flows into the hot water tank without being fully heated, resulting in the negative effect of reducing the temperature of the heated hot water in the hot water tank

[0006] In particular, when the demand for hot water increases, the amount of cold water flowing into the hot water tank also increases, and the cold water (about 5 to 20°C) is directly circulated without sufficient heat exchange with the hot water in the hot water tank. , and perform heat exchange with the above-mentioned hot water heat exchanger, so that the water temperature at the inlet side of the hot water heat exchanger is too low, and it is difficult to heat it to 50-70°C. Therefore, as mentioned above, it will further reduce the heat inside the hot water tank. Negative Effects of Water Temperature

[0007] Due to the above problems, in order to heat the hot water in the hot water tank to the required temperature, the warm water in the hot water tank must be continuously circulated. As a result, the heat pump composed of the compressor and the hot water heat exchanger is overloaded, resulting in The equipment is overheated or burned. In an emergency, the heat pump alone cannot supply sufficient hot water within the required time, causing the boiler to start frequently, which not only increases energy consumption, but also fails to achieve the purpose of saving energy by using the heat pump.

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