Open Access

ARTICLE

Peltier Water Cooling System with Solar Energy and IoT Technology Demonstration Set

Prasongsuk Songsree^*, Chaiyapon Thongchaisuratkrul^*

Faculty of Technical Education, King Mongkut’s University of Technology North Bangkok, Bangkok, 10800, Thailand

* Corresponding Authors: Prasongsuk Songsree. Email: ; Chaiyapon Thongchaisuratkrul. Email:

(This article belongs to the Special Issue: AI in Green Energy Technologies and Their Applications)

Energy Engineering 2025, 122(11), 4541-4559. https://doi.org/10.32604/ee.2025.068448

Received 29 May 2025; Accepted 21 August 2025; Issue published 27 October 2025

Abstract

The purpose of this research is to design and develop a demonstration Set of a water cooling system using a Peltier with solar energy and technology, and IoT (Internet of Things), and test and measure the performance of the Peltier Plate Water Cooling System Demonstration Set under different environmental conditions. To be used as a model for clean energy systems and experimental learning materials. The prototype system consists of a 100-W solar panel, a 12 V 20 Ah battery, a Peltier plate, a DS18B20 sensor, and a NodeMCU microcontroller. The system performance is determined by analyzing the energy drawn from the water (Q) compared to the electrical energy supplied to the plate (Q2) and calculating the coefficient of performance (COP) value to evaluate the performance of the system, as well as testing the operation under different light conditions (morning, noon, evening) with real-time temperature data and control behavior recorded via IoT (Internet of Things). The results showed that the system can reduce the water temperature by an average of 4°C–7.5°C within 60–90 min, with an average COP (COEFFICIENT OF PERFORMANCE) in the range of 0.3–0.4 during unstable solar energy periods. The system can respond to commands via the Blynk application in under 2 s and can also operate continuously on battery backup power during low-light hours.

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Keywords

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