Shell-and-tube latent heat thermal energy storage units employ phase change materials to store and release at a nearly constant temperature, deliver high effectiveness of transfer, as well charging/discharging power. Even though many studies have investigated the material formulation, transfer through simulation, experimental studies, there is limited research dedicated unit design methodology....

Nonuniformity of inlet temperatures often produces “false-positives” that will increase overall supply airflow (higher fan energy). Nonuniformity could also result in cooler supply temperatures (lower chiller efficiency). And if you use nonuniform control mechanisms, you will not be able to target cooling where it is needed, which means you will probably overcool servers that don’t need the coo...

Sharon Tsay, Centers for Disease Control and Prevention Kaitlin Benedict, Centers for Disease Control and Prevention Zintars G. Beldavs, Oregon Health Authority Monica Farley, Emory University Lee H. Harrison, Maryland Emerging Infections Program William Schaffner, Vanderbilt University Taryn Gerth, Centers for Disease Control and Prevention Tom Chiller, Emory University Snigdha Vallabhaneni, C...

A microbiological study of an experimental beef-tenderizing treatment, in which lean sides are held at 37 degrees C until transfer to a chiller at 3 h postmortem, was made. The treatment did not cause a significant increase in bacterial numbers or a proliferation of potential pathogens or food-spoiling organisms.

Model-Based Generic Approaches for Automated Fault Detection, Diagnosis, Evaluation (FDDE) And Accurate Control of Field-Operated Centrifugal Chillers Yongzhong Jia Agami Reddy Performance monitoring of large engineering systems with the objective of optimal control and fault detection, diagnosis and evaluation (FDDE) has drawn the attention of several researchers over the last 3-4 decades. How...

Một mô hình tham số đặc tính chính xác sẽ có vai trò then chốt trong việc nâng cao tỷ lệ của quá trình phát hiện và chẩn đoán lỗi hệ thống chiller. Vì vậy nghiên cứu này đã thực so sánh đánh giá 3 phương pháp MLR, GRNN RBFNN đóng là để hóa các hoạt động Hai chỉ kê R2 RMSE được sử dụng tiêu chí ở giai đoạn huấn luyện hình. Sau đó, kết hợp với t-test cùng quy luật khảo sát khả năng Bộ dữ liệu ngh...

This paper deals with a lumped-parameter dynamic simulation of a single-effect LiBr-H2O absorption chiller. In many studies the thermodynamic properties of LiBr-H2O solution were taken from some approximate relations causing the results to be somewhat inaccurate. These relations were used to solve simultaneous differential equations involving the continuity of species constituting the LiBr-H2O ...