What makes the embodied energy of a building a “sunk cost”? It’s a cost that must be built into the budget but doesn’t relate to a specific budget area.

It’s the kind of cost that can only be assessed through careful analysis of the existing structure.

It’s a real cost that has already been paid in the past and so doesn’t represent a present expense.

It’s a cost that can surface in the budget unexpectedly without attention to energy efficiency.

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

Which of the following is an easy way to remember the modified “x” tire rotation? a. nondrive wheels straight, cross the drive wheels b. drive wheels straight, cross the nondrive wheels c. drive wheels crossed, nondrive wheels straight d. drive wheels crossed, nondrive wheels crossed

Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.