StudyHub

Scenario You have recently been employed as a civil engineering technician by a local contractor. The company has recently appointed a new Managing Director. The MD is keen to improve the performance of the structures the company are designing and building and asked to carry out an investigation of the factors which influence human comfort and the thermal performance of the buildings. Tasks The submission comprises two related items: Section – Discuss the basic factors that affect human comfort and identify materials within in a building which can assist with achieving comfortable conditions for the inhabitants of the building. Section 2 – Human Comfort Calculations Human comfort factors are essential in buildings in which we occupy, therefore calculate the following to either establish values or achieve compliance; Calculate the ‘U’ value for the cavity wall shown and given performance criteria; Surface Resistance Surface Resistance Brickwork Air Concrete Block Plaster Insulation Aerated Concrete block- Insulation Board Brickwork 0.11 0.025 0.77 Standard Thermal Resistances in mºK/W; Internal surface External surface Cavity 0.12 0.06 0.18 Wall Specification: External Brick 102.5mm Air Gap 35mm Concrete Block 100mm Lightweight 12mm Plaster Using the information calculated and using the information below. calculate the following: Fabric heat loss (1) Ventilation heat loss (i) Total heat loss in kilowatts -1°C 7.8 10.6 21°C 1.4×0.8 3.6×0.8 2.8m b2x0.6 2.5×0.8 3.4m 4.5m Assume 1.5 air changes per hour Uvalues Floor Roof Windows Door 0.55 0.4 2.4 1.65