Energy complementary passive house of Trombe wall and soil-air heat exchange system based on energy storage

Abstract

The invention relates to an energy complementary passive house of Trombe wall and soil-air heat exchange system based on energy storage, and the energy complementary passive house comprises a soil-airheat exchange system, a Trombe wall cavity, a phase change energy storage external wall hot water system, a phase change energy storage internal wall and a building main body. According to the invention, the Trombe wall cavity and the soil-air heat exchange system are coupled and applied for the first timely, fresh and high-quality cooling air can be provided indoors without using a fan in summer, zero energy consumption of a building is realized, and more comfortable air supply temperature can be provided indoors in winter. Different phase change energy storage units are applied to the system, which can not only improve the heat exchange efficiency of the system and reduce the fluctuation of indoor temperature, but also realize the purpose of intermittent operation of the air heat exchange system, and the efficiency of the system is prevented from being obviously reduced due to long-term continuous operation. In addition, the system can be used as a heat-generating end to prepare domestic hot water in summer, and provide a suitable supply air temperature indoors when solar radiation is insufficient in winter.

Description

technical field [0001] The invention relates to an energy-storage-based Trombe wall and a soil-air heat exchange system energy complementary passive house, which belongs to the application of renewable energy technology in the field of building energy conservation. Background technique [0002] At present, building energy consumption has become my country's three major energy consumers alongside transportation energy consumption and industrial energy consumption. With the increase of new building area and the improvement of people's living comfort, building energy consumption will increase more and more. more and more obvious. In building energy consumption, cooling and heating energy consumption is the most important form of energy consumption. With the improvement of people's living standards, the requirements for the living environment are getting higher and higher, so people begin to use air conditioners to ensure the thermal comfort of the indoor environment. The exten...

AI Technical Summary

Problems solved by technology

However, the traditional soil-air heat exchange system often adopts the form of horizontal buried pipes, which have the disadvantages of large footprint, high shallow soil temperature, and difficulty in centralized discharge of condensed water. The buried pipe is set with a certain slope, but there is still condensed water that condenses on the pipe wall and is difficult to discharge quickly. If the condensed water adheres to the pipe wall for a long time, mold and disease will inevitably occur, which will affect the air supply air quality of the system

In addition, the heat storage capacity of the soil is limited. When the traditional system runs continuously for a long time, the heat transfer efficiency of the system drops rapidly, that is, the temperature of the soil around the buried pipe rises / falls obviously after a period of operation (summer / winter)

Although the patent (authorization number: CN 206670100 U) proposes a vertical tunnel ventilation system with buried pipes, the patent has the following three problems: 1) The system uses PE pipe material, and the PE pipe has a small compressive capacity. After a certain depth, there is a serious phenomenon of being crushed, and the heat transfer capacity of the PE pipe is low; 2) The treatment of condensed water is not reasonable enough. It mainly uses two variable diameter butt joints to reduce the contact between air and condensed water. The drainpipe uses a water suction pump to discharge the condensed water in a concentrated manner. The variable diameter is easy to damage during the construction of the buried pipe. In addition, the head of the traditional water suction pump is small, and it is difficult to suck out water when the depth exceeds 10.5m.

3) The lower buried pipe for effective heat exchange is directly in contact with the soil, without a phase change energy storage structure, but the heat storage capacity of the soil is limited, so the efficiency of the system drops rapidly during operation

Zhu Na et al. proposed a self-regulating phase transition Trombe wall (authorization number: CN 106836522 A), which can effectively solve the problem of insufficient heating in winter and overheating in summer when the traditional Trombe wall has no sun in comparison with the existing technology. However, this patent does not consider how to use the heat generated by the Trombe wall in summer, nor does it take into account the wind-drawing effect of the Trombe wall due to thermal pressure as a power source for other energy-saving technologies. The peak heat generated by the solar energy is reduced to reduce the impact of its external wall temperature

Similarly, patents such as CN 104314196 A, CN 103790244 A and CN 208154693U only consider the effect of the Trombe wall on improving the indoor environment in winter, but cannot make good use of its wind-drawing effect in summer As the power source of other technologies, and without taking into account the excess heat generated by the Trombe wall in summer as a heat source for other media, it is difficult to fully utilize the Trombe wall in summer

Images