Question 1 Heat pumps are regarded as an important technology to facilitate decarbonising the UK heat supply. Discuss this technology, in your own words using diagrams and other graphical information, and how it will contribute to the UK’s net zero target. (Total 25 marks)
Question 2 a) Calculate the total rate of heat lossfor the building described below:•The building is 15m long by 8m wide by 3.5m high. •In the walls are two windows, one 1.2m x 0.6m, the other 1.8m x 1.8m and there is one door 1.75m x 0.8m. •The construction has the following U-values in W/m²K: windows 1.8, door 1.2, walls 1.5, flat roof 0.5, floor 1.5. •The inside comfort temperature is 21°C while the outside air temperature is minus 1°C. •The volumetric specific heat capacity of the air is taken to be 1300 J/mK. •There are 1.0 air changes per hour. Present your fabric heat loss calculations in table form and show the calculation of the ventilation heat loss, showing the correct formulas and units of measurement. (13 marks)b) A lamp has a luminous intensity of 1200 candelas and acts as a point source. The lamp is situated 2.5m above the office floor, which is 6m wide.i) Calculate the illuminance in lux, on the floor surface directly below the lamp. (4 marks)ii) Calculate the illuminance at the opposite edge of the room. (4 marks)iii)Explain the significance of your results (4 marks) (Total 25 marks)
Module Code: 5BUIL001W Page 3 of 4
Question 3 You have been asked to give advice on a Rainscreen Cladding system for a small industrial unit which is not more than 18 metres in height. Your proposed Rain screen cladding system must take into account the following areas:•Characteristics and types of panels•Types of backing•Fire compartmentalisation •Fixings•Vapour control•External appearanceYour answer must be supported by a rationale which takes into account the cladding’s performance and installation. Provide a written proposal together with an annotated sketch to illustrate your answer.(Total 25 marks)
Question 4 a) The image below shows an electrical schematic for an electrical installation. Identify the component parts of the schematic highlighted and provide a summary of their purpose in the installation. An example of the format of your response is given for component 1 in the table below. (16 marks)
Module Code: 5BUIL001W Page 4 of 4EXAMPLE:Component NumberComponent LabelDescription of component and purpose1 60A Distribution Board The distribution board splits the incoming power supply into circuits. These circuits are separate and are grouped around the electrical components that they serve. This is demonstrated by the 15A circuit to the Fire Alarm panel. In this instance the Fire alarm panel provides the load to the feed of the circuit of the distribution b) Explain the reason for earthing and earth bonding (grounding) in an electrical installation. Describe and give reason for at least two types of earthing that are commonly found in an electrical installation.
