Heat pump practice questions

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1. Q1. A heat pump gives out 8 kW of heat while using 2 kW of electricity. What is its COP?

   A0.25B4C16

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2. Q2. What should a heat pump's size be worked out from?

   AThe output of the boiler it replacesBThe number of radiators in the houseCA room-by-room heat loss calculation for a cold design day

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3. Q3. With 45 °C flow, 40 °C return and a 20 °C room, what ΔT should you use to read a radiator's output?

   A22.5 KB25 KC50 K

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4. Q4. Why does a heat pump cylinder usually have a larger coil than one made for a boiler?

   ATo pass heat across from cooler primary waterBSo the stored water and the heating water can mixCTo make the cylinder hold more litres

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5. Q5. A heat pump system keeps losing pressure. What's the right response?

   ATop it up with plain water whenever it dropsBFind out why it's losing pressure and record what you findCRaise the fill pressure so it lasts longer between top-ups

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6. Q6. Where does the Boiler Upgrade Scheme apply?

   AEngland and WalesBEngland onlyCAny home that has a gas boiler, wherever it is

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