Absolute Humidity At Inside Temperature In Dehumidification Calculator

Formula Used:

\[ Y_i = Y_g - \frac{(h_1 \times (T_i - T_l)) - h_g \times (T_g - T_i)}{(k_y \times h_{fg})} \]

Absolute Humidity of Air (Yg):

Liquid Phase Heat Transfer Coefficient (h1):

W/m²K

Temperature at Inner Surface (Ti):

°C

Liquid Layer Temperature (Tl):

°C

Gas Phase Heat Transfer Coefficient (hg):

W/m²K

Bulk Gas Temperature (Tg):

°C

Gas Phase Mass Transfer Coefficient (ky):

mol/s·m²

Enthalpy of Evaporation (hfg):

J/kg·K

Absolute Humidity at Inside Temperature (Yi):

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1. What is Absolute Humidity At Inside Temperature In Dehumidification?

Absolute humidity at inside temperature (Yi) in dehumidification represents the quality of water vapor in the wet air of unit volume at temperature ti during the dehumidification process. It's a crucial parameter in HVAC and drying systems.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Y_i = Y_g - \frac{(h_1 \times (T_i - T_l)) - h_g \times (T_g - T_i)}{(k_y \times h_{fg})} \]

Where:

\( Y_i \) — Absolute humidity at inside temperature
\( Y_g \) — Absolute humidity of air at initial temperature
\( h_1 \) — Liquid phase heat transfer coefficient (W/m²K)
\( T_i \) — Temperature at inner surface (°C)
\( T_l \) — Liquid layer temperature (°C)
\( h_g \) — Gas phase heat transfer coefficient (W/m²K)
\( T_g \) — Bulk gas temperature (°C)
\( k_y \) — Gas phase mass transfer coefficient (mol/s·m²)
\( h_{fg} \) — Enthalpy of evaporation (J/kg·K)

Explanation: This formula calculates the absolute humidity at the inside temperature by considering heat and mass transfer coefficients, temperature differences, and evaporation enthalpy.

3. Importance of Absolute Humidity Calculation

Details: Accurate absolute humidity calculation is crucial for designing efficient dehumidification systems, optimizing energy consumption, and maintaining proper environmental conditions in various industrial and commercial applications.

4. Using the Calculator

Tips: Enter all required parameters with appropriate units. Ensure all heat transfer coefficients and mass transfer coefficients are positive values. Temperature values can be positive or negative depending on the application.

5. Frequently Asked Questions (FAQ)

Q1: What is the significance of absolute humidity in dehumidification?
A: Absolute humidity determines the amount of moisture present in air, which is critical for designing and operating dehumidification systems effectively.

Q2: How does temperature affect absolute humidity?
A: Warmer air can hold more moisture, so absolute humidity increases with temperature when moisture content remains constant.

Q3: What are typical units for absolute humidity?
A: Absolute humidity is typically measured in kg of water vapor per kg of dry air or g/m³.

Q4: Why are heat transfer coefficients important in this calculation?
A: Heat transfer coefficients determine how efficiently heat is transferred between phases, which directly affects the dehumidification process.

Q5: When is this calculation most useful?
A: This calculation is particularly useful in HVAC system design, industrial drying processes, and any application where precise moisture control is required.