Novel combined heat dissipation terminal system

Abstract

The invention discloses a novel combined heat dissipation terminal system. The novel combined heat dissipation terminal system includes a backwater booster pump, an electric driven heat pump type airheater, a conventional indoor heat dissipation device, a small control cabinet, a main water supply horizontal pipe, a first water supply branch, a second water supply branch, a first main backwater horizontal pipe, a first backwater branch, a second backwater branch, a heater backwater pipeline and a second main backwater horizontal pipe. According to the novel combined heat dissipation terminalsystem, by using the electric driven heat pump type air heater, heat of a circulating heat medium of a secondary net is recovered, the backwater temperature of the secondary net is greatly lowered, the water temperature of a primary net is also lowered, and various low-temperature waste heat and renewable energy are promoted to be recycled and reused; by effectively increasing the temperature difference between supplying water and back water of the secondary net, the circulating flow of the secondary net under the same heat load conditions is reduced, and power consumption of a circulating pump is significantly reduced; and the temperature difference between supplying water and back water of the primary net is increased, the circulating flow of the primary net and the power consumption ofthe circulating pump are significantly reduced, and energy-saving benefits are notable.

Description

Technical field [0001] The invention relates to a building heating system, in particular to a novel combined heat dissipation terminal system. Background technique [0002] According to the national standard GB50736-2012 "Civil Building Heating Ventilation and Air Conditioning Design Code", the design of indoor heating system's supply and return water temperature: floor heating system is usually 60 / 50 ℃, 50 / 40 ℃, radiator system supply and return water The temperature is 85 / 60, 75 / 50℃. It can be seen that no matter whether the indoor end device is a radiator or a floor heating coil, it is higher than the condensation temperature of thermal power plants (about 29°C) or other industrial waste heat temperatures (15-25°C), so this type of low-temperature waste heat cannot be directly and efficiently used , And need to rely on heat pump equipment. [0003] The actual temperature difference between the secondary grid supply and the return water of the heating system is relatively small...

AI Technical Summary

Problems solved by technology

However, when the outdoor temperature is low (at this time, additional supplementary heating is needed), the heat supply coefficient of the air conditioning unit decreases, and the same heat supply will consume more electric energy. At the same time, the outdoor unit as an evaporator also has frosting risk

The heat supply coefficient of the electric heater is slightly less than 1, which is significantly lower than that of the heat pump air conditioner. It will consume more electricity to obtain the same heat supply, and the operating cost is high, so it is difficult to promote and use it on a large scale.

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