公开(公告)号：US20220378008A1

公开(公告)日：2022-12-01

申请号：US17761739

申请日：2020-09-22

申请人： The Regents of the University of California

发明人： Theresa Pistochini ,  Elizabeth Chen ,  Vinod Narayanan

IPC分类号： A01K1/00 ,  G01W1/10

摘要： Systems and methods are provided for controlling heat stress and accumulations in livestock using the application of water sprays onto the animal in conjunction with fan induced airflow. The system has a controller with sensor inputs of the ambient environment including temperature, humidity, wind speed, and surrounding surface temperature sensors and fan and spray control outputs. To achieve savings in water and electricity, a transient, one-dimensional simultaneous heat and mass transfer model of evaporation within the wetted fur layer of a dairy cow is used to estimate drying time and heat rejection rate based on ambient conditions along with a control algorithm to predict the fan speed and sprinkler operation frequency needed to meet specified cooling load thresholds given the outdoor conditions. Estimated savings demonstrated that the model-based controller could reduce annual electricity and water consumption by 20% and 40%, respectively.

公开(公告)号：US12066197B2

公开(公告)日：2024-08-20

申请号：US17148359

申请日：2021-01-13

申请人： The Regents of the University of California

发明人： Vinod Narayanan ,  Erfan Rasouli

IPC分类号： F24F1/00 ,  F24F1/0007 ,  F24F1/0067 ,  F25B9/00 ,  F25B30/02 ,  F28F3/02 ,  F28F3/04

CPC分类号： F24F1/0067 ,  F24F1/00077 ,  F25B9/002 ,  F25B30/02 ,  F28F3/022 ,  F28F3/048 ,  F28F2250/106 ,  F28F2255/143 ,  F28F2260/02

摘要： The disclosed embodiments relate to a system that provides a polymer heat exchanger with internal microscale flow passages. The system includes a set of plates comprised of a polymer that includes internal microscale flow passages, which are configured to carry a liquid. The set of plates is organized into a stack, wherein consecutive plates in the stack are separated by fins to form intervening air passages. The system includes a liquid flow pathway, which flows from a liquid inlet, through the internal microscale flow passages in the stack of plates, to a liquid outlet. It also includes an airflow pathway, which flows from an airflow inlet, through the intervening air passages between the consecutive plates in the stack of plates, to an airflow outlet. The liquid flow pathway flows in a direction opposite to a direction of the airflow pathway to provide a counterflow design that optimizes heat transfer between the liquid flow pathway and the airflow pathway.

公开(公告)号：US20220010981A1

公开(公告)日：2022-01-13

申请号：US17148359

申请日：2021-01-13

申请人： The Regents of the University of California

发明人： Vinod Narayanan ,  Erfan Rasouli

IPC分类号： F24F1/0067 ,  F28F3/04 ,  F28F3/02 ,  F25B9/00 ,  F25B30/02 ,  F24F1/0007

摘要： The disclosed embodiments relate to a system that provides a polymer heat exchanger with internal microscale flow passages. The system includes a set of plates comprised of a polymer that includes internal microscale flow passages, which are configured to carry a liquid. The set of plates is organized into a stack, wherein consecutive plates in the stack are separated by fins to form intervening air passages. The system includes a liquid flow pathway, which flows from a liquid inlet, through the internal microscale flow passages in the stack of plates, to a liquid outlet. It also includes an airflow pathway, which flows from an airflow inlet, through the intervening air passages between the consecutive plates in the stack of plates, to an airflow outlet. The liquid flow pathway flows in a direction opposite to a direction of the airflow pathway to provide a counterflow design that optimizes heat transfer between the liquid flow pathway and the airflow pathway.

公开(公告)号：US20210055063A1

公开(公告)日：2021-02-25

申请号：US17018026

申请日：2020-09-11

申请人： THE REGENTS OF THE UNIVERSITY OF CALIFORNIA ,  CARNEGIE MELLON UNIVERSITY

发明人： Vinod Narayanan ,  Erfan Rasouli ,  Anthony Rollett ,  Samikshya Subedi

IPC分类号： F28F3/08 ,  B33Y80/00 ,  F28D9/00

摘要： An apparatus with a first pathway configured to circulate a first substance and a second pathway configured to circulate a second substance between a plurality of plates. The first pathway includes: a plurality of plates with a plurality of flow channels; a first inlet configured to receive the first substance and provide the first substance to the first plurality of flow channels; and a first outlet configured to receive the first substance from the first plurality of flow channels. The second pathway includes: a second inlet configured to receive the second substance; and a second outlet configured to output the second substance.