6.5 Comparison ASHRAE thermal comfort and results from experiment

6.5 COM PARISON AS HREA THERM AL COM FORT AND RESULTS FROM THE

CURRE NT EXPERIM ENT

This section will compare the results from Chapter 6 with the ASHRAE 55 standards to indicate the system’s effectiveness.

6.5.1 Ventilated heating system (Winter range 20°C to 23°C)

Chapter 6.1 indicates that the ambient temperature reached an average of 21°C between 13:00 pm and 16:00 pm. The solar heating system discharged heat between 20°C and 23°C from 18:00 pm till 20:00 pm; after that, the temperature dropped below the minimum of 20°C.

6.5.2 Enclosed heating system (Winter range 20°C to 23°C)

The results in Section 6.2 indicate that the ambient temperature reached an average of 21°C between 13:00 pm and 16:00 pm. The solar heating system discharged heat between 20°C and 23°C from 18:00 pm till 1:00 am the following day; the temperature dropped below the minimum of 20°C.

6.5.3 Ventilated cooling (Summer range 23°C to 26.6°C)

The results from section 6.3 indicate that the ambient temperature ranged between 23°C to 26.6°C from 10:00 am till 12:00 pm and 17:00 pm till 19:00 pm. The rock bed of the ventilated system was able to provide an air temperature of between 23°C and 26.6°C from 12:00 pm till 00:00 am; after that, the temperature dropped below 23°C.

6.5.4 Enclosed cooling (Summer range 23°C to 26.6°C)

The results from section 6.3 indicate that the ambient temperature ranged between 23°C to 26.6°C from 10:00 am till 12:00 pm and 17:00 pm till 19:00 pm. The rock bed of the enclosed system was able to provide an air temperature of between 23°C and 26.6°C from 20:00 pm and 1:00 am; after that, the temperature dropped below 23°C.

6.5.5 ASHRAE STANDARD

According to a National Institute for Occupational Safety and Health published in the United States of America, thermal comfort is related to metabolic heat production, heat transfer to the environment, physiological adjustments, and body temperature. Heat transfer from the body to the environment is influenced by temperature, humidity, air movement, personal activities, and clothing. According to the ASHRAE Standard 55-2013, the thermal