An 10ft x 10ft x 12ft mechanical room has 400 watts of lighting and some small motors with a total output of 0.5 HP. All of the energy in the lighting and from the motors is converted into heat. Suppose the walls are well insulated, that is, no heat loss to the surroundings.
A) What is the increase in enthalpy of the room air from these sources (in Btu/hr)?
B) Calculate ventilation rate required to keep the room at a steady-state temperature. Temperature inside is 68ºF and outside is 28ºF.
An 10ft x 10ft x 12ft mechanical room has 400 watts of lighting and some small...
Design Problem Design a small chiller room 2.35 m wide by 6 m long and 2.38 m high that is to be used to chill and store a food product. The chiller is to be loaded with 60 buckets of the food product at 23 °C which needs to be cooled down to 3 °C within 24 hours using air at 1 °C, with a heat transfer coefficient of 36 W m2 K Tasks 1. Calculate the peak refrigeration loading...
summarizr the followung info and write them in your own words and break them into different key points. 6.5 Metering Chamber: 6.5.1 The minimum size of the metering box is governed by the metering area required to obtain a representative test area for the specimen (see 7.2) and for maintenance of reasonable test accuracy. For example, for specimens incorporating air spaces or stud spaces, the metering area shall span an integral number of spaces (see 5.5). The depth of...
summatize the following info and break them into differeng key points. write them in yojr own words apartus 6.1 Introduction—The design of a successful hot box appa- ratus is influenced by many factors. Before beginning the design of an apparatus meeting this standard, the designer shall review the discussion on the limitations and accuracy, Section 13, discussions of the energy flows in a hot box, Annex A2, the metering box wall loss flow, Annex A3, and flanking loss, Annex...