Cooling degree day analysis as a climate impactIndicator for different locations of poland and india
Energy analysis plays an important role in developing an optimum and cost effective design of HVAC system for a building. Although there are different energy analysis methods, which vary in complexity, the degree day methods are the simplest methods and well established tools. Energy consumption increases as the number of heating and cooling degree days increases and falls as the number of heating and cooling degree days falls. The value of degree days is a measure used to indicate the demand for energy to heat or cool buildings. The monthly or annual cooling and heating requirements of specific buildings in different locations can be estimated by means of the degree days concept. The base temperature is the outdoor temperature below or above which heating or cooling is needed. Cooling degree days enable better benchmarks to be developed for air conditioned buildings, allow improved Building Energy Management System operation and produce better energy estimating methods. These three factors could make real contribution to energy efficiency and CO2 emission targets. In this study the degree days for period 2008 2012 were calculated for Poland (5 cities) and India (5 cities) in each country. Cooling Degree Days for India were calculated for base temperature from 18 oC till 26oC. The Cooling Degree Days for Poland were calculated for base temperature from 18 till 28oC.The average annual value of CDD18 for Indian cities is CDD18 for Chennai is 4108, for Kolkata CDD18=3360, for New Delhi CDD18=3015, for Mumbai CDD18=3469, for Mangalore CDD18=3449. The average annual value of CDD18 for Polish cities is Suwalki CDD18=99 for Zielona Gora CDD18=75, Zakopane CDD18=43, Gdansk CDD18=62, Warsaw CDD18=182.