Application of Prefabricated Low Temperature Radiant Heating in Buildings

Abstract

With the adjustment of energy supply structure, energy supply is developing in the direction of clean, efficient, low-carbon and energy-saving, promising a strong development momentum the low-temperature radiant heating system that can use geothermal energy, solar energy and industrial waste heat as heat source. Prefabricated concrete structure is not standardized and modularized enough, which leads to more complex design and construction, and also increases the difficulty of popularization and application of prefabricated concrete structure. Compared with traditional radiator heating, low-temperature radiant floor heating has many obvious advantages. In this paper, a new type of prefabricated low-temperature radiant heating floor is proposed. Through theoretical analysis and numerical simulation, the thermal performance of the prefabricated low-temperature radiant heating floor is studied, and its internal structure (including buried pipe depth h, pipe spacing S, pipe layout mode, etc.) is optimized, so as to improve the floor insulation performance, uniform temperature distribution and optimize the radiation surface temperature. The paper also studies the effects of different water supply conditions (water temperature, temperature difference between supply and return water, water supply speed) on the floor surface temperature and surface heat flow. This paper explores the internal heat transfer mechanism of prefabricated low-temperature radiant heating floor, constructs the mathematical model of prefabricated low-temperature radiant heating floor, and constructs the comprehensive evaluation model of surface thermal performance of prefabricated low-temperature radiant heating floor according to the uniformity of surface temperature distribution and heat flow distribution.