Evaluation

Input	Output
A room is kept at 25°C by a vapor-compressionrefrigeration cycle with R-134a as the refrigerant. Heat is rejected to cooling water that enters the condenser at 20°C at a rate of 0.13 kg/s and leaves at 28°C. The refrigerant enters the condenser at 1.2 MPa and 50°C and leave as a saturated liquid. If the compressor consumes 1.9 kW of power, determine the exergy destruction in the condenser. Take T0 = 20°C and $c_{p,water}$ = 4.18 kJ/kg⋅°C<image 1> (A) 0.1 kW (B) 0.2 kW (C) 0.3 kW Answer with the option's letter from the given choices directly. No punctuation.	Google: Gemini Pro Vision 1.0 mmmu / Energy_and_PowerPublic A Difficulty: Medium Subfield: Thermodynamics

Input

Output

A room is kept at 25°C by a vapor-compressionrefrigeration cycle with R-134a as the refrigerant. Heat is rejected to cooling water that enters the condenser at 20°C at a rate of 0.13 kg/s and leaves at 28°C. The refrigerant enters the condenser at 1.2 MPa and 50°C and leave as a saturated liquid. If the compressor consumes 1.9 kW of power, determine the exergy destruction in the condenser. Take T0 = 20°C and $c_{p,water}$ = 4.18 kJ/kg⋅°C<image 1>

(A) 0.1 kW

(B) 0.2 kW

Answer with the option's letter from the given choices directly. No punctuation.

Google: Gemini Pro Vision 1.0

mmmu / Energy_and_PowerPublic

Difficulty: Medium

Subfield: Thermodynamics

Evaluation ID: c5756cf2-483f-4d6b-9b2f-9160c88f2a36
Created: February 21, 2024

Raw Output

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