Replacing incandescent lights with energy-efficient fluorescent lights can reduce the

Replacing incandescent lights with energy-efficient fluorescent lights can reduce the lighting energy consumption to one-fourth of what it was before. The energy consumed by the lamps is eventually converted to heat, and thus switching to energy-efficient lighting also reduces the cooling load in summer but increases the heating load in winter. Consider a building that is heated by a natural gas furnace with an efficiency of 80 percent and cooled by an air conditioner with a COP of 3.5. If electricity costs $0.12/kWh and natural gas costs $1.40/therm (1 therm = 105,500 kJ), determine if efficient lighting will increase or decrease the total energy cost of the building
(a) In summer and
(b) In winter.

Members

  • Access to 1 Million+ Textbook solutions
  • Ask any question from 24/7 available
    Tutors
$9.99
VIEW SOLUTION
OR

Non-Members

Get help from Thermodynamics Tutors
Ask questions directly from Qualified Online Thermodynamics Tutors .
Best for online homework instance.