AIR CONDITIONING SIMULATION OF OFFICE BUILDINGS BY RECENT TOKYO 60 YEAR WEATHER DATA

Aging of heating and cooling loads in office buildings and energy saving by blind control

Abstract

 Using the heat load calculation program (LESCOM) developed by the authors, we conducted a thermal load simulation using the weather data of the recent Japan Meteorological Agency in Tokyo for 60 years, captured the annual heating and cooling load, the instantaneous peak load, and predict the heating and cooling load in the near future.

 In addition, we examined the correspondence in the blind control of the opening to decrease the cooling load, and the following conclusions were obtained.

 (1) The annual cooling load in offices in Tokyo has been decreasing from 1960 to 1969, and has been on an increasing trend since 1972.The most recent building standard level estimated increase is 0.58GJ/year.

 (2) Tokyo's office annual heating load has decreased since 1960. It tends to be small. The estimated decrease in the most recent building standard level is 0.47GJ/year.

 (3) Office instantaneous cooling load in Tokyo is on a declining trend from 1960 to 1969, It has been on an increasing trend since 1972.The estimate of the most recent is 0.31kW/year.

 (4) The annual cooling load of the window is decreasing from 1960 to 1969, and has been on an increasing trend since 1972. The estimated increase in the most recent is 0.07GL/year.

 (5) The annual cooling load of the out air incorporation is decreasing from 1960 to 1969, and has been increasing since 1972. Similarly the estimated increase is 0.17GJ/year.

 (6) The annual cooling load of the outside wall incorporation is decreasing from 1960 to 1969, and has been increasing since 1972. Similarly the estimated increase is 0.003GJ/year.

 (7) Office instantaneous heating load in Tokyo has been decreasing since 1960 to the present day. The estimated decrease in the most recent is 0.150kW/year.

 (8) The annual heating load of the opening has been decreasing since 1960 to the present day. The estimated decrease in the most recent is 0.06GJ/year.

 (9) The annual heating load of the outside air intake has been decreasing since 1960 to the present day.

 (10) As a way to deal with the increasing cooling load, it is found that the minimum thermal heat gain control is effective in reducing the cooling load.