Cooling Degree Days: An Energy Audit Tool for Hospitals
Аннотация
The cooling degree days was used to assess and audit the performance of heating ventilating and air conditioning (HVAC) systems in Hospitals in Port Harcourt. It is aimed at using energy techniques in evaluating the amount of energy utilised by HVAC systems by the application of climatological parameters. It therefore has the ability of identifying the amount of energy consumed by HVAC systems among other energy consuming systems in the hospital. Climatological parameters of average temperature were calculated from the daily maximum and daily minimum temperatures and a base temperature of 27°C was subtracted from it to obtain the average daily variation. The cooling degree days’ value was obtained from the product of daily variation and the number of days of operation of the Air Conditioning systems (A/C) for 2016, 2017 and 2018. Calculated total energy consumed by the A/C were also recorded. The cooling degree days’ chart was generated and used to assess the level of energy attained by the AC system and showed that the most energy was consumed in 2017 when compared to 2016 and 2018 at the same CDD. At 100 CDD, the energy consumption were 53,102 KWH, 106,805 KWH and 81,100 KWH for 2016, 2017 and 2018 respectively. The linear programming chart was used to predict the amount of energy consumed using the cooling degree days per year of assessment.
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Библиографические ссылки
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