Heat Transfer & Thermodynamics for Buildings and Machines

What you'll build

What you will be able to do

Each lab ends with a concrete result that you build yourself and the checker confirms, cell by cell.

• Calculate the temperature rise, the heat needed in kJ and kWh for six heating jobs at the Kestrel Works workshop, and how long a heater needs for the water tank.
• Add up the thermal resistances of a five-layer workshop wall, turn them into a U-value and calculate the heat flow on a cold day.
• Calculate the UA of every part of the workshop envelope, add ventilation, find the design heat load in kW and estimate the annual heat demand in kWh with degree-days.
• Calculate the convective and radiative heat loss of five hot machine surfaces, the share of radiation and the total loss in kW.
• Size the plate heat exchanger that recovers heat from the cooling water of the workshop compressors: duty, log mean temperature difference and area, for counterflow and parallel flow.
• Model how an aluminium part cools after the heat-treatment oven, find the time constant, the time until it is safe to handle and chart the exponential cooling curve.
• Calculate the efficiency of three heat engines and the COP of three heat pumps, and compare each with its Carnot limit.
• Calculate how much fuel a new roof insulation saves each year, build a 12-year saving table with rising prices and chart the cumulative cash flow to see the payback year.