WCEC Publishes Two New Case Studies
Derrick Ross, Assistant Engineer, examines sensors before testing the MSP dehumidification system.
Laboratory Testing of an Energy Efficient Dehumidifier for
Indoor farming operations do not require the typical ratio of air temperature (sensible cooling) and moisture content (latent cooling) required for residential or commercial buildings. In order to meet these specialized requirements, dehumidification systems are often necessary.
Traditional dehumidification systems provide dehumidification and increase the air temperature, as opposed to the desired dehumidification and reduction of air temperature. An alternative is MSP Technology’s dehumidification system that uses a plate air-to-air heat exchanger and a cooling coil that is part of a split compressor-based refrigeration system.
This process results in a ratio of sensible to latent cooling that is well suited for indoor farming applications. Experimental laboratory testing and numerical modeling were performed to estimate the annual energy savings produced by using the MSP Technology’s dehumidification system over a traditional dehumidification system. The results of this project forecast that implementation of MSP Technology’s system has potential to save 30% or more of the energy used for dehumidification and cooling in indoor farming applications.
Download the Case Study: http://bit.ly/mspcasestudy
UC Davis News Article on WCEC's laboratory testing of a new dehumidification system
Caton Mande, Development Engineer, examines WCEC's test clothes dryer.
Energy-Efficient Clothes Dryers: Automatic Cycle Termination Controller
In the interests of promoting energy efficiency and satisfying consumers, there has been a move toward automatic termination controllers in residential dryers, which use some method of sensing to determine when the load is dry. However, available test data shows that these control systems do not fare well when their energy efficiency performance is measured.
This project developed an automatic dryer cycle termination controller that utilized the relationship between dryer drum inlet temperatures and outlet temperatures to accurately predict the end of the drying cycle. The technology promises to be more accurate and robust in performance under different load and environmental conditions in comparison to existing technology. The low-cost automatic controller was demonstrated in the laboratory to reduce energy use in gas clothes dryers by accurately terminating the drying cycle. In addition, information obtained in the drying cycle can be used to predict real-time energy efficiency metrics to track dryer performance over time as a means for fault detection and to provide information to the consumer.
Download the Case Study: bit.ly/DryerReport