Environmental Heat Transfer to a Microclimate Cooling System During Heat Exposure.
Abstract
Heat transfer from the environment (Q(env)) to a water-based microclimate cooling system (MCS), operated at four temperatures of water (T(w)), Was measured utilizing a rubber manikin outfitted in coveralls and chemical protective clothing. Q(env) increased in direct proportion to the difference in T(w) and ambient temperature (T(a)). Good linear models were found for predicting Q(env) when T(a) or temperature between clothing layers and T(w) are known. These models can be used in future physiological tests to apportion heat transfer between the environment and the body. Q(env) was substantial, greater than 100 w at the lowest temperature of water, even when insulated from the environment. Because many MCSs have limited cooling capacities, it is important to reduce Q(env) Thus, it is advantageous to wear insulating garments in hot environments when microclimate cooling is used.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 02, 1998
- Accession Number
- ADA349469
Entities
People
- Katherine Canine
Organizations
- Naval Health Research Center