Heat-Pipe Dehumidifier Layout for Low-Power Humidity Control

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing humidity control apparatuses face challenges in achieving high dehumidifying efficiency while minimizing power consumption due to inefficient dehumidification processes in both vapor-compression and peltier element-based systems.

Innovation Solution

A humidity control apparatus featuring a dehumidifying part with a heat-pipe configuration, a heat-insulating part, and a peltier element that absorbs heat from one side to condense working fluid on the other side, enhancing dehumidification efficiency and reducing power requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a vapor-compression dehumidifier is used to achieve high dehumidification capacity, then the dehumidification capacity is improved, but the power consumption increases and dehumidifying efficiency decreases

Engineering Contradiction:
Improvedehumidification capacityVSAvoidpower consumption
Core Design Contradiction:
ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent utilizes the phase transition of water from liquid to vapor and back to liquid through controlled evaporation and condensation processes. The dehumidifier evaporates water into the air stream and then condenses it back, leveraging latent heat of vaporization to achieve dehumidification with minimal energy input, directly resolving the contradiction between dehumidification capacity and power consumption

Inventive Principle:
Principle #36Phase transitions

Solution Approach 2:

The system uses the latent heat released during condensation to pre-cool incoming air and the evaporation process to cool the condensation surface, creating a self-sustaining thermal cycle. This self-service mechanism reduces the need for external power input while maintaining high dehumidification capacity, addressing both power consumption and efficiency concerns

Inventive Principle:
Principle #25Self-service

2Use of energy by moving object

If a peltier element is used to cool air for dehumidification, then power consumption is reduced, but the cooling capacity and dehumidifying efficiency are low

Engineering Contradiction:
Improvepower consumptionVSAvoidcooling capacity
Core Design Contradiction:
Use of energy by moving objectVSProductivity

Solution Approach 1:

The patent combines evaporative cooling, condensation, and latent heat recovery into a single integrated dehumidification system. By merging these processes, the system achieves high cooling capacity through the amplification of latent heat effects while maintaining low power consumption, resolving the contradiction between cooling capacity and power usage

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The system leverages the phase transition of water during evaporation and condensation to amplify cooling effects. The latent heat absorbed during evaporation and released during condensation creates a thermal amplification effect that significantly increases cooling capacity without proportionally increasing power consumption

Inventive Principle:
Principle #36Phase transitions

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The apparatus improves dehumidifying efficiency by reducing the sensible heat load to latent heat load ratio and lowers power consumption, allowing for precise humidity control without the need for additional humidity sensors or wick maintenance.

Implementation Method 1

a main body part (32) that is configured to encapsulate a working fluid therein and to cause a heat-pipe phenomenon

Methodology Applied
Scientific EffectHeat-pipe phenomenon: Heat Pipe

Implementation Method 2

a heat absorption part (34a) that absorbs heat from a base side part (32b) located on one side of the main body part in relation to the heat-insulating part and thereby condenses the working fluid that evaporated into gas

Methodology Applied
Scientific EffectHeat absorption: Heat Sink

Implementation Method 3

a heat-insulating part (24) fitted externally to the main body part

Methodology Applied
Scientific EffectHeat insulation: Thermal Insulation

Implementation Method 4

wherein the dehumidifying part dehumidifies the air by means of condensation of moisture on a surface of the front side part of the main body part where the working fluid in liquid form evaporates therein

Methodology Applied
Scientific EffectEvaporation: Evaporation

Implementation Method 5

dehumidifies the air by means of condensation of moisture on a surface of the front side part of the main body part

Methodology Applied
Scientific EffectCondensation: Condensation

Data Source

PatentUS8973383B2Humidity control apparatus, environment test apparatus, and temperature and humidity control apparatus
Publication Date: 2015.03.10 ESPEC CORP
  • US8973383B2 patent drawing
  • US8973383B2 patent drawing
  • US8973383B2 patent drawing

AI summary

A humidity control apparatus has a humidity control apparatus having a humidifying part for humidifying air and a dehumidifying part for dehumidifying to control humidity of a humidity control space. The dehumidifying part has: a main body part that is configured to encapsulate a working fluid therein and to cause a heat-pipe phenomenon. A heat-insulating part fits externally to the main body part and a heat absorption part absorbs heat from a base side part located on one side of the main body part in relation to the heat-insulating part and thereby condenses the working fluid that evaporated into gas in a front side part located on the other side of the main body part in relation to the heat-insulating part. The dehumidifying part dehumidifies the air by means of the front side part of the main body part where the working fluid in liquid form evaporates.