Consider a house whose walls are 4 m high and 12 m long two

Assignment Help Mechanical Engineering

Reference no: EM13630817

Consider a house whose walls are 4 m high and 12 m long. Two of the walls of the house have no windows, while each of the other two walls has four wndows made of 0.6-cm-thick glass (k=0.78 W/m*C), 1.0 m x1.5 m in size. The walls are certified to have an R-value of 3.3 (i.e., an L/k value of 3.3 m2*C/W). Disregarding any direct radiation gain or loss through the windows and taking the heat transfer to be 11 and 22 W/m2*C, respectively, determine the ratio of the heat transfer through the walls with and without windows.

Reference no: EM13630817

Questions Cloud

When boiling water a hot plate takes an average of 464 : when boiling water a hot plate takes an average of 464 seconds to boil 110 milliliters of water. assume the temperature

A compressor receives air at 95kpa and 250c at low velocity : a compressor receives air at 95kpa and 250c at low velocity. at the exit of the compressor air discharges at 1.52mpa

Superheated ammonia enters an insulated nozzle at 200c and : superheated ammonia enters an insulated nozzle at 200c and 800kpa. the flow through the low velocity inlet is at

A centrifugal pump can provide a 20-m head rise at 75 : a centrifugal pump can provide a 20-m head rise at 75 revmin. if the rotation speed increases to 90 revmin what will be

Consider a house whose walls are 4 m high and 12 m long two : consider a house whose walls are 4 m high and 12 m long. two of the walls of the house have no windows while each of

Find the entropy production rate for the nozzle the exit : the comubstion chamber of a liquid-h2liquid-o2 fueled rocket produces a steady-state-steady-flow of h2osuperheated

If you can neglect the potential energy effects the inlet : steam enters an adiabatic turbine at 3 mpa and 350 celsius and leaves the turbine at 75 kpa with a quality of 89. if

Nitrogen gas at steady-state-steady-flow undergoes a : nitrogen gas at steady-state-steady-flow undergoes a compression provess through a well-insulated compressor. the inlet

Argon gas flows through a rigid nozzle at : argon gas flows through a rigid nozzle at steady-state-steady flow. the inlet flow velocity is small. the gas exits the

User Account

All Pages