How can heat pipes be used to improve the dehumidification abilities of air conditioning systems?
What will be an ideal response?
They cool the air before it enters the evaporator, so that the evaporator operates at a lower temperature, increasing the dehumidification effect of the coil. The heat that was removed from the air entering the coil is added back to the air leaving the evaporator. In effect, the air is reheated using heat taken from the air itself.
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In a sensor network, the energy consumed by different functions by a sensor is as follows:
Assume the total number of nodes as P, the number of cluster heads to be m, the number of sensor nodes which send their data to different cluster heads as n, and the frame size to be B bits.
(a) Find the power consumption, during a frame time period if sensing and communication is done during every frame, assuming the other half of the nodes are sleeping at that time.
(b) Find the power consumption in the idle frame when sensing and
communication to the CH is done in every alternate frame. Remember that power is consumed even in the sleeping mode of the cycles, when sensing is not carried out.
(c) Find the total power consumption in different frames if sensing is done every other cycle, while transmission to CH is done every fourth frame.
(d) Repeat part (b) if there are 10 clusters, with each cluster consisting of 8 sensor nodes and aggregation done by CH every 8 frames while CH to base station communication takes place every 16 frames.
Drawings and specifications are the output of what stage of a project?
a. Concept and feasibility b. Procurement c. Engineering and design d. Startup and implementation e. None of the above
Hydro-boost operates by using the ___________ to provide assist for the brakes.
A. ABS B. power steering system C. transmission D. differential
The refrigeration unit thermostat will not:
A. Establish the switching point between heating and cooling cycles. B. Establish the switching point between high speed and low speed. C. Monitor the box temperature of the vehicle. D. Maintain the engine temperature.