Underfloor Heating System Analysis

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Modelling and Performance Analysis of Underfloor Heating System Supplied from a Heat Pump Muhammad Akmal1, Brendan Fox2, Damian Flynn3 and D. John Morrow2 1 Abu Dhabi University, Abu Dhabi, UAE 2 Queen’s University Belfast, Northern Ireland, UK 3 University College Dublin, Republic of Ireland makmal01@qub.ac.uk Abstract- This paper describes the thermal capacity and thermal inertia of the underfloor heating system supplied from a heat pump. A MATLAB/SIMULINK based thermal model of the system have been developed and presented with detailed mathematical equations. For this purpose, experimental results and actual measurements are used to model the energy storage and temperatures. This model is used to find building temperature variations,…show more content…
The benefit is that a large portion of heat is extracted from outside air or ground instead of using a fuel source. Underfloor heating provides a uniform temperature over the floor, in contrast with concentrated heaters. The efficiency of underfloor heating is also better than radiator-based heaters because less heat is rejected from the roof [1]. Underfloor heating requires low temperature water (35 oC to 45 oC) as compared to radiators (60 oC and above). The former is the range where heat pumps have greater efficiency. Hence, underfloor heating with heat pumps is a suitable combination…show more content…
Then, the refrigerant is further compressed without thermal conduction to saturated vapours, whose temperature is increased at a higher pressure through a compressor. In the next stage, the refrigerant releases heat to the sink at this temperature with the condenser applied which again transforms the refrigerant to the phase of saturated liquid, and the temperature decreases when the refrigerant passes through the expansion valve to the evaporator

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