Summer and winter cold and hot water supply method for cultivation farm

Abstract

The invention discloses a summer and winter cold and hot water supply method for a cultivation farm. In winter, firstly, acquired seawater and fresh water pumped from a fresh water well are mixed into mixed water; and secondly, after heat exchange, mixed water flows into condensers of two single-screw water source heat pump units in parallel and is turned into cultivation hot water after absorbing heat, after waste water formed by high-temperature water after heat exchange is mixed with fresh water pumped from the fresh water well, mixture of the waste water and the fresh water flows into a heat exchanger to indirectly exchange heat with water on evaporator sides of the two heat pump units, and circulating water in independent water systems of the evaporator sides flows into evaporators of the heat pump units in parallel after heat exchange to discharge heat. In summer, acquired seawater is mixed with fresh water pumped from the fresh water well, and then flows into the evaporators of the two heat pump units in parallel, and required cultivation cold water can be obtained after mixture of the seawater and the fresh water realizes heat discharge and is cooled; and a second channel of seawater directly flows into the condensers of the two heat pump units in parallel after being pressurized by a cooling water circulating water pump, and is drained after heat is absorbed. The method is efficient and energy-saving and is low in running expense.

Description

Technical field [0001] The invention relates to the technical field of cold and hot water supply in the breeding industry, in particular to the field of geothermal energy exploitation and utilization. Background technique [0002] In recent years, large-scale farms have developed rapidly. However, with the increasingly serious energy crisis and environmental pollution, the traditional cold and hot water supply methods of breeding farms have become increasingly unsuitable for modern large-scale breeding farms, and the development of new energy-saving and environmentally friendly cold and hot water supply methods has become more and more important. important. Geothermal resources are a kind of clean and renewable energy. Because of its advantages of easy development, low cost, cleanliness, and constant temperature, it has been widely used in residential heating, bathing industry, hotel catering and tourism service industries. Seawater source heat pump technology is a low-temperat...

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Problems solved by technology

In addition to the use of renewable energy, significant environmental benefits, and no pollution during operation, the seawater source heat pump also has the characteristics of high efficiency, energy saving, and low operating costs. However, this technology has not been applied in farms so far. The field uses traditional fuel boilers or electric power for cooling and hot water, and the pollutants discharged are easy to pollute the environment and cause waste of resources

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