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A solar water heater mounted on the roof consists of two flat plates. Water enters at A and exits at B. Assume the average temperature of the water is 45°C. (Figure 1) ▼ Part A If the gap between the plates is a = 1.38 mm, determine the maximum allowable pressure drop from A to B so that the flow remains laminar Express your answer three significant figures and include the appropriate units. μÅ Apmax=3722.192 → C N m² PMC ? Submitted Answers ANSWER 1: Deduction: -3% Apmax= 2329.45 Pa

A solar water heater mounted on the roof consists of two flat plates. Water enters at A and exits at B. Assume the average temperature of the water is 45°C. (Figure 1) ▼ Part A If the gap between the plates is a = 1.38 mm, determine the maximum allowable pressure drop from A to B so that the flow remains laminar Express your answer three significant figures and include the appropriate units. μÅ Apmax=3722.192 → C N m² PMC ? Submitted Answers ANSWER 1: Deduction: -3% Apmax= 2329.45 Pa

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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**Title: Understanding Pressure Drop in Solar Water Heaters** **Description:** This educational resource explores the pressure dynamics in a solar water heater system. The heater, mounted on a roof, includes two flat plates. The system allows water to enter at point **A** and exit at point **B**. The average temperature of the water is assumed to be 45°C. **Diagram Explanation:** - The illustration shows a side view of the solar heater setup. - The plates are inclined at an angle of 5° relative to the horizontal plane. - The length of the plates is labeled as 2 meters. - The gap between the plates is specified as 1.38 mm. **Task:** - **Objective:** Determine the maximum allowable pressure drop (\( \Delta P_{\text{max}} \)) from point **A** to point **B** while ensuring the flow remains laminar. **Attempts and Responses:** 1. **First Attempt:** - Submitted: \( \Delta P_{\text{max}} = 2329.45 \, \text{Pa} \) - Result: Incorrect, with a 3% deduction. 2. **Second Attempt:** - Submitted: \( \Delta P_{\text{max}} = 2.329 \, \text{kPa} \) - Result: Incorrect, with a 3% deduction. 3. **Third Attempt:** - Submitted: \( \Delta P_{\text{max}} = 3722.192 \, \frac{N}{m^2} \) - Result: Incorrect, with a 3% deduction. Participants are encouraged to calculate carefully and check their units and significant figures when submitting their answers. Providing feedback and asking for hints can assist in achieving the correct solution.
Transcribed Image Text:**Title: Understanding Pressure Drop in Solar Water Heaters** **Description:** This educational resource explores the pressure dynamics in a solar water heater system. The heater, mounted on a roof, includes two flat plates. The system allows water to enter at point **A** and exit at point **B**. The average temperature of the water is assumed to be 45°C. **Diagram Explanation:** - The illustration shows a side view of the solar heater setup. - The plates are inclined at an angle of 5° relative to the horizontal plane. - The length of the plates is labeled as 2 meters. - The gap between the plates is specified as 1.38 mm. **Task:** - **Objective:** Determine the maximum allowable pressure drop (\( \Delta P_{\text{max}} \)) from point **A** to point **B** while ensuring the flow remains laminar. **Attempts and Responses:** 1. **First Attempt:** - Submitted: \( \Delta P_{\text{max}} = 2329.45 \, \text{Pa} \) - Result: Incorrect, with a 3% deduction. 2. **Second Attempt:** - Submitted: \( \Delta P_{\text{max}} = 2.329 \, \text{kPa} \) - Result: Incorrect, with a 3% deduction. 3. **Third Attempt:** - Submitted: \( \Delta P_{\text{max}} = 3722.192 \, \frac{N}{m^2} \) - Result: Incorrect, with a 3% deduction. Participants are encouraged to calculate carefully and check their units and significant figures when submitting their answers. Providing feedback and asking for hints can assist in achieving the correct solution.
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