3) A thermoelectric refrigerator that resembles a small ice chest is powered by a car battery and has a COP of 0.1. If the refrigerator cools a 0.350 L canned drink (assuming the density is 1 kg/L with the specific heat capacity of 4.18 kJ/kg/K) from 20 to 4°C in 30 min, determine the average electric power consumed by the thermoelectric refrigerator.
3) A thermoelectric refrigerator that resembles a small ice chest is powered by a car battery and has a COP of 0.1. If the refrigerator cools a 0.350 L canned drink (assuming the density is 1 kg/L with the specific heat capacity of 4.18 kJ/kg/K) from 20 to 4°C in 30 min, determine the average electric power consumed by the thermoelectric refrigerator.
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:**Problem 3: Thermoelectric Refrigerator Analysis**
A thermoelectric refrigerator that resembles a small ice chest is powered by a car battery and has a Coefficient of Performance (COP) of 0.1. If the refrigerator cools a 0.350 L canned drink (assuming the density is 1 kg/L with the specific heat capacity of 4.18 kJ/kg/K) from 20°C to 4°C in 30 minutes, determine the average electric power consumed by the thermoelectric refrigerator.
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**Explanation:**
- **Thermoelectric Refrigerator:** A compact cooling device powered by a car battery.
- **Coefficient of Performance (COP):** A measure of the efficiency of the refrigerator, defined as 0.1 for this specific device.
- **Parameters of the Canned Drink:**
- Volume: 0.350 liters.
- Density: 1 kg/L (e.g., the drink is water-like).
- Specific Heat Capacity: 4.18 kJ/kg/K.
- Temperature Change: From 20°C to 4°C.
- Time Frame: 30 minutes.
**Task:** Calculate the average electric power consumed by the refrigerator over the cooling process.
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