A New Combined Heat Dissipation Terminal System

Abstract

The invention discloses a new combined heat dissipation terminal system, which includes a return water booster pump, an electric drive heat pump type heater, a conventional indoor cooling device, a small control cabinet, a main water supply horizontal pipe, a first water supply branch, and a second water supply branch. Branch road, the first main road of the backwater horizontal pipe, the first backwater branch, the second backwater branch, the heater return pipe and the second main road of the backwater horizontal pipe. This system uses an electric-driven heat pump type heater to recover the heat of the circulating heat medium in the secondary network, greatly reduces the return water temperature of the secondary network, and jointly reduces the return water temperature of the primary network, and promotes the recovery and utilization of various low-temperature waste heat and renewable energy. This system effectively increases the temperature difference between the supply and return water of the secondary network, reduces the circulation flow of the secondary network under the same heat load conditions, and significantly reduces the power consumption of the circulating pump; increases the temperature difference between the supply and return water of the primary network, and significantly reduces the The circulating flow rate of the stage network and the power consumption of the circulating pump have remarkable energy-saving benefits.

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 "Code for Design of Heating Ventilation and Air Conditioning in Civil Buildings", the design supply and return water temperature of the indoor heating system: the floor heating system is usually 60 / 50 ℃, 50 / 40 ℃, and the radiator system supply and return water Temperature 85 / 60, 75 / 50°C. It can be seen that no matter whether the indoor terminal device is a radiator or a floor heating coil, it is higher than the condensation temperature of a thermal power plant (about 29°C) or the temperature of other industrial waste heat (15-25°C), so this kind of low-temperature waste heat cannot be directly and efficiently utilized , but need the help of heat pump equipment. [0003] The actual temperature difference between the secondary network supply and return water...

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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