Module 62 March 2014 1. In the model, where was the hotel located?
A London B Paris C Strasbourg D Milan E Berlin
2. What was the approximate maximum cooling demand for the hotel in the period 5-11 April?
A 150 kW B 200 kW C 250 kW D 300 kW E 350 kW
3. In the optimised model of the hotel operation, what theoretical annual CO2
saving was predicted with the VRV/cascade system,
compared to the ‘traditional’ VRV with gas boiler system? A 50 tonnes CO2
e
B 100 tonnes CO2 C 150 tonnes CO2 D 200 tonnes CO2 E 250 tonnes CO2
e e e e
4. What is the suggested typical optimum point for a VRV system in terms of its operating efficiency?
A In the lower 20% of its total capacity B Between 20% and 50% of its total capacity C Between 50% and 70% of its total capacity D Between 70% and 90% of its total capacity E Above 90% of its total capacity
5. In the example given, what seasonal COP is predicted for the VRV/cascade system?
A 0.9 B 1.0 C 3.9 D 6.0 E 6.9
68 CIBSE Journal March 2014
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