On a cold day, 26100 J of heat leaks out of a house. The inside
temperature is 22 °C, and the outside temperature is -20 °C.
What is the increase in the entropy of the universe that this heat
loss produces?
On a cold day, 26100 J of heat leaks out of a house. The inside temperature is 22 °C, and the outside temperature is -20...
help please
Chapter 15, Problem 078 GO On a cold day, 28000 J of heat leaks out of a house. The inside temperature is 22 °C, and the outside temperature is -23 °C. What is the increase in the entropy of the universe that this heat loss produces? Number Units the tolerance is +/-2% Click if you would like to Show Work for this question: Open Show Work
On a cold winter day, the outside temperature is -20°C and the inside temperature is maintained at 20°C. There is a net heat flow to the outside through the walls, roof, etc., of 25 kW. What is the rate of increase of the entropy of the universe as a result of this heat flow?
On a cold winter day where the outside temperature is -10o C, a heat pump provides 20 kW to heat a house to 20o C. The heat pump has a COPHP of 4 at the maximum power. The next day a storm brings the outside temperature down to −15o C. If the ratio of COPHP and the reversible COPrev for day 1 and day 2 is the same, COPHP for both days is the same, and that the house loses...
A house uses a heat pump to maintain the indoor temperature at 22 C on a cold winter day when the outside temperature is -10 C. On this day, the house receives heat from the heat pump at a rate of 24 kW. Is it possible for this heat pump to operate at 2.5 kW? Justify your answer.
In this problem you will estimate the heat lost by a typical house, assuming that the temperature inside is T(in) = 20 degrees celcius and the temperature outside is T(out) = 0 degrees celcius. The walls have fiberglass insulation, which dominates the heat conduction properties of the wall So we can consider the wall to have a thermal conductivity of k(wall) = 0.048 W/m/K . We will take the thickness of the walls and ceiling to be L(wall) = 12...
An ideal heat pump is used to maintain the inside temperature of a house at Tin = 20 ∘C when the outside temperature is Tout. Assume that when it is operating, the heat pump does work at a rate of 1700 W . Also assume that the house loses heat via conduction through its walls and other surfaces at a rate given by (650W/∘C)(Tin−Tout). For what outside temperature would the heat pump have to operate at all times in order...
On a hot summer day, 3.50 ✕ 106 J of heat transfer into a parked car takes place, increasing its temperature from 36.5°C to 44.4°C. What is the increase in entropy (in J/K) of the car due to this heat transfer alone? On a winter day, a certain house loses 5.80 ✕ 108 J of heat to the outside (about 550,000 Btu). What is the total change in entropy (in J/K) due to this heat transfer alone, assuming an average...
On a cold winter day, the outside temperature is –5.0 °C while the interior of a well-insulated garage is maintained at 20.0 °C by an electric heater. Assume the walls have a total area of 75 m2, a thickness of 0.15 m, and a thermal conductivity of 0.042 W/(m · C°). What is the cost to heat the garage for six hours at these temperatures if the cost of electricity is $ 0.11/kWh? Note: 1 kWh = 3.6 × 106...
A hot reservoir at the temperature 650 K transfers 2000 J of heat irreversibly to a cold reservoir at temperature 200 K. A) What is the change in entropy of the universe? B) Is entropy a conserved non-conserved quantity?
The temperature difference between the inside and the outside of a building on a cold winter day is 51°F. (a) Express this difference on the Celsius scale. 25 x Review the relationships between temperature scales. Note that the value is a temperature difference, not a single temperature measurement. °C (b) Express this difference on the Kelvin scale. K