Multi-energy-complementary heating and heat supply system of nearly zero energy consumption building in alpine region

Abstract

The invention relates to a multi-energy-complementary heating and heat supply system of a nearly zero energy consumption building in an alpine region. The solar energy is combined with building foundation storage energy storage to achieve heating in winter, and the solar energy is combined with an air source heat pump to achieve domestic hot water supply. The multi-energy-complementary heating and heat supply system comprises a solar thermal collector, a heat storage coil, a heat-preservation foundation heat storage layer, a plate heat exchanger, warm air blowers, the air source heat pump, a hot water tank and the like. In non-heating seasons, the solar thermal collector is used for heating domestic water which is then stored in the water tank, and the air source heat pump is used for auxiliary heating if heat energy is insufficient. In heating seasons, part of hot water flows into the heat storage coil to be stored for standby use or to be used for supplying heat to the interior of a room through the warm air blowers, and the other part of the hot water flows into the plate heat exchanger to heat domestic water. When solar radiation is weak, the hot water flows from the building foundation heat storage layer into the warm air blowers to supply heat to the interior of the room, and the air source heat pump operates in daytime with the high temperature to heat domestic water which is then stored for standby use. According to the multi-energy-complementary heating and heat supply system of the nearly zero energy consumption building in the alpine region, renewable energy sources are utilized for multi-energy complementation to achieve heating and domestic heat supply of the alpine region in winter, and nearly zero energy consumption operation of the building can be achieved.

Description

technical field [0001] The present invention belongs to the category of multi-energy complementary heating and heat supply utilizing renewable energy for both energy and quality, and in particular relates to the use of abundant solar energy in alpine regions combined with building foundation energy storage to solve winter heating, and the combination of solar energy and air source heat pumps to solve year-round domestic heat. Water supply, to achieve near-zero energy consumption in buildings in alpine regions. Background technique [0002] (1) Alpine regions generally refer to areas with high altitude, high latitude, and low temperature all year round. In my country, alpine regions refer to some areas such as the Qinghai-Tibet Plateau and the Loess Plateau. In these areas, the spring and autumn seasons are short, and there is almost no need to use equipment to cool down in summer, and the heating time in winter is relatively long, and the requirements for heating are relativ...

AI Technical Summary

Problems solved by technology

Since most of the alpine regions in my country are located in economically underdeveloped regions, the cost of municipal construction is relatively high, and conventional energy sources are lacking, so the problems of heating in winter and hot water supply throughout the year have been difficult to effectively solve

[0003] (2) Residents in alpine regions mostly live in a scattered way, and the construction of the pipe network is difficult, long-term, and large in investment, so it is difficult to form an organized heating and heating pipe network system

Traditional water tanks have small heat storage and cannot accommodate the heat required for large-area heating

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