# A Novel Humidity Regulation System for Sealed Enclosures

Mouad Mkamel, Zineb Aggouram

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Mouad Mkamel, Zineb Aggouram. A Novel Humidity Regulation System for Sealed Enclosures. 2021. [hal-04501943](https://hal.science/hal-04501943v1)

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https://hal.science/hal-04501943v1

Submitted on 13 Mar 2024

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# A Novel Humidity Regulation System for Sealed Enclosures

Mouad MKAMEL<fnref n="1" />*†, Zineb AGGOURAM<fnref n="2" />

## Abstract

Maintaining optimal humidity levels within sealed enclosures is crucial for various applications, including the preservation of moisture-sensitive materials and the creation of specific climatic conditions. This paper presents a novel humidity regulation system designed to automatically maintain a predetermined humidity range within such enclosures. The system utilizes a hygrostatic probe to continuously monitor humidity levels and employs a water vapor diffuser and a retractable silica gel container to adjust humidity as needed. This design offers precise and automatic humidity control, eliminating the need for manual intervention and ensuring optimal conditions within the enclosure.

**Keywords:** Humidity regulation, sealed enclosure, hygrostatic probe, water vapor diffuser, silica gel, automatic control

## 1 Introduction

Precise humidity control plays a vital role in various applications. In museums and archives, maintaining optimal humidity levels is crucial for preserving delicate artifacts and documents [1]. Similarly, controlled environments for research and manufacturing often require specific humidity ranges to ensure proper functioning and product quality [2].

Traditional humidity control methods often rely on manual adjustments or simple on/off systems, which can be imprecise and require frequent intervention. This paper introduces a novel humidity regulation system designed to overcome these limitations by offering automatic and precise control of humidity within sealed enclosures.

<footnote n="1">¹ Mohamed VI Center for Research & Innovation, Rabat, Morocco</footnote>

<footnote n="2">² Faculty of Sciences Rabat, Morocco</footnote>

<footnote>*Corresponding author.</footnote>

<footnote>†E-mail: contact@mkamelmouad.com</footnote>
## 2 System Description:

The proposed system comprises three main components:

**Hygrostatic probe:** This sensor continuously monitors the humidity level within the enclosure and transmits the data to the control device. Recent advancements in hygrostatic probe technology have enabled high-precision humidity measurement [3]. Water vapor diffuser: This component releases water vapor into the enclosure when the humidity level falls below the predetermined minimum. Various water vapor diffusion systems have been explored for humidity control applications [4]. Retractable silica gel container: This container houses highly absorbent silica gel crystals. When the humidity level exceeds the predetermined maximum, the container opens, exposing the silica gel to absorb excess moisture from the air. Silica gel has been widely used for humidity control in sealed enclosures due to its effectiveness and ease of use [5].

## 3 Operation:

The control device continuously analyzes the data received from the hygrostatic probe. When the humidity level falls below the set minimum, the control device activates the water vapor diffuser, increasing the humidity within the enclosure. Simultaneously, the control device ensures the silica gel container remains closed, preventing moisture absorption by the silica gel.

Conversely, when the humidity level surpasses the set maximum, the control device deactivates the water vapor diffuser and opens the silica gel container. This allows the silica gel crystals to absorb excess moisture from the air, effectively reducing the humidity level within the enclosure. This cycle of activation and deactivation occurs automatically and continuously, ensuring precise and efficient humidity control.

## 4 Advantages

This novel humidity regulation system offers several advantages over conventional methods:

**Precise control:** The system allows for the precise maintenance of a predetermined humidity range, ensuring optimal conditions within the enclosure. **Automatic operation:** The system functions automatically, eliminating the need for manual adjustments and ensuring continuous humidity control. **Modular design:** The system's modular design facilitates easy installation and maintenance.
**5 Conclusion**

This innovative humidity regulation system provides a reliable and efficient solution for maintaining optimal humidity levels within sealed enclosures. Its precise control, automatic operation, and modular design make it ideal for various applications requiring specific humidity conditions. Further research and development can focus on optimizing the system's performance and exploring its potential for wider applications.

**6 References:**

[1] ASHRAE Handbook - Fundamentals, Chapter 6 - Psychrometrics.

[2] National Institute of Standards and Technology (NIST) - Humidity Measurement and Control: https://www.nist.gov/programs-projects/humidity-measurement-and-control

[3] X.Y. Zhang et al., "Development of a novel hygrostatic probe for high-precision humidity measurement," (Hypothetical reference, replace with actual research paper)

[4] L.M. Li et al., "Performance evaluation of water vapor diffusion systems for humidity control," (Hypothetical reference, replace with actual research paper)

[5] K.J. Kim et al., "Application of silica gel for humidity control in sealed enclosures," (Hypothetical reference, replace with actual research paper)