The large primary-secondary chilled water systems often suffer from the excess flow demand and low chilled water temperature difference, which is known as the low ΔT central plant syndrome, during operation. This paper presents an approach for experimental validation of the possible utility of a check valve (i.e., putting a one-direction check valve in the chilled water by-pass line) to solve t...

Chiller adalah mesin refrigerasi yang fungsi utamanya mendinginkan air pada sisi evaporator. Air kemudian dialirkan ke AHU (Air Handling Unit) untuk didinginkan dan dihembuskan dalam ruangan. Penghapusan panas atau dimulai di Mesin ini memiliki keunggulan lebih hemat energi digunakan gedung bertingkat. Penelitian bertujuan merancang membangun chiller berkapasitas 6 KW, menggunakan sistem kompre...

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...

To generate electricity, Gas Turbine Power Plants are extensively used around the world but their efficiency is negatively affected on hot days by ambient air temperatures. and output power will decrease 2% 12.5% respectively at temperature 40°C due to lower density resulting increase in compressor specific work. 
 Ordinarily, cooling down intake of gas turbine facilitated employing a vari...

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...