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In this study, analysis of shell and tube heat exchanger (HE) is performed. Theory part on heat transfer, calculation of heat exchanger and general thermal and hydrological properties are described. Several models are developed and computed…

Fluid Dynamics · Physics 2018-10-09 D. Loginov , A. Ustinov

The regulations regarding the Paris Agreement are planned to be adapted soon to keep the global temperature rise within 2 0C. Additionally, integrating renewable energy-based equipment and adopting new ways of producing energy resources,…

Optimization and Control · Mathematics 2023-05-01 Su Meyra Tatar , Erdal Aydin

The rapid growth of urban populations and the increasing need for sustainable transportation solutions have prompted a shift towards electric buses in public transit systems. However, the effective management of mixed fleets consisting of…

Optimization and Control · Mathematics 2026-01-14 Rishav Sen , Amutheezan Sivagnanam , Aron Laszka , Ayan Mukhopadhyay , Abhishek Dubey

A current trend in networking and cloud computing is to provide compute resources at widely dispersed places; this is exemplified by developments such as Network Function Virtualisation. This paves the way for wide-area service deployments…

Networking and Internet Architecture · Computer Science 2016-08-31 Matthias Keller , Holger Karl

In renewable power-to-ammonia (ReP2A) systems, the intermittency of wind and solar generation propagates through electrolytic hydrogen production and induces thermal instability in the ammonia synthesis reactor (ASR). The resulting…

Optimization and Control · Mathematics 2026-04-29 Yiwei Qiu , Qingjie Sun , Yangjun Zeng , Ge Chen , Longjie Yang , Ge He , Xu Ji , Shi Chen , Buxiang Zhou , Kaigui Xie

The 4th generation of district heating systems face a potential problem where lowered water temperatures lead to higher flow rates, which requires higher hydraulic capacity in terms of pipe and pump sizes. This increases the effect of the…

Systems and Control · Electrical Eng. & Systems 2022-11-22 Felix Agner , Pauline Kergus , Richard Pates , Anders Rantzer

This paper proposes a coordinated home energy management system (HEMS) architecture where the distributed residential units cooperate with each other to achieve real-time power balancing. The economic benefits for the retailer and…

Systems and Control · Computer Science 2012-04-11 Tsung-Hui Chang , Mahnoosh Alizadeh , Anna Scaglione

It is a crucial problem how to heat oil and save running cost for crude oil transport. This paper strictly formulates such a heated oil pipeline problem as a mixed integer nonlinear programming model. Nonconvex and convex continuous…

Optimization and Control · Mathematics 2019-07-26 Muming Yang , Yakui Huang , Yu-Hong Dai , Bo Li

Innovative membrane technologies optimally integrated into large separation process plants are essential for economical water treatment and disposal. However, the mass transport through membranes is commonly described by nonlinear…

A heat engine is a machine which uses the temperature difference between a hot and a cold reservoir to extract work. Here both reservoirs are quantum systems and a heat engine is described by a unitary transformation which decreases the…

Quantum Physics · Physics 2009-11-11 Dominik Janzing

Power distribution networks, especially in North America, are often unbalanced but are designed to keep unbalance levels within the limits specified by IEEE, IEC, and NEMA standards. However, rapid integration of unbalanced devices, such as…

Systems and Control · Electrical Eng. & Systems 2025-01-14 Rahul K. Gupta , Daniel K. Molzahn

Proper heat transfer management is important to key electronic components in microelectronic applications. Pulsating heat pipes (PHP) can be an efficient solution to such heat transfer problems. However, mathematical modelling of a PHP…

Optimization and Control · Mathematics 2014-04-01 Xin-She Yang , Mehmet Karamanoglu , Tao Luan , Slawomir Koziel

In this paper, a multi-horizon model predictive controller (MH-MPC) is developed for integrated power and thermal management (iPTM) of a power-split hybrid electric vehicle (HEV). The proposed MH-MPC leverages an accurate short-horizon…

Systems and Control · Electrical Eng. & Systems 2020-03-20 Qiuhao Hu , Mohammad Reza Amini , Hao Wang , Ilya Kolmanovsky , Jing Sun

Stream processing engines (SPEs) are widely used for large scale streaming analytics over unbounded time-ordered data streams. Modern day streaming analytics applications exhibit diverse compute characteristics and demand strict latency and…

Databases · Computer Science 2023-01-31 Anand Jayarajan , Wei Zhao , Yudi Sun , Gennady Pekhimenko

High-entropy alloys (HEAs) with various promising applications have attracted significant interest. However, alloying immiscible metal elements while controlling the morphology and crystallinity remains extremely challenging. We report a…

Materials Science · Physics 2024-05-28 Qiubo Zhang , Yi Chen , Karen. C. Bustillo , Haimei Zheng

Model predictive control has gained popularity for its ability to satisfy constraints and guarantee robustness for certain classes of systems. However, for systems whose dynamics are characterized by a high state dimension, substantial…

Systems and Control · Electrical Eng. & Systems 2024-11-26 Demetrius Gulewicz , Uduak Inyang-Udoh , Trevor Bird , Neera Jain

We develop a complementarity-constrained nonlinear optimization model for the time-dependent control of district heating networks. The main physical aspects of water and heat flow in these networks are governed by nonlinear and hyperbolic…

Optimization and Control · Mathematics 2020-04-22 Richard Krug , Volker Mehrmann , Martin Schmidt

The effective utilization at scale of complex machine learning (ML) techniques for HEP use cases poses several technological challenges, most importantly on the actual implementation of dedicated end-to-end data pipelines. A solution to…

Distributed, Parallel, and Cluster Computing · Computer Science 2020-06-17 Matteo Migliorini , Riccardo Castellotti , Luca Canali , Marco Zanetti

As large scale deployment of smart devices in the power grid continues, research efforts need to increasingly focus on efficient communication of generated information. This paper describes a strategy for static routing and scheduling of…

Networking and Internet Architecture · Computer Science 2019-11-12 Shuchismita Biswas , Virgilio Centeno

The synchronized molecular dynamics simulation via macroscopic heat and momentum transfer is proposed for the non-isothermal flow behaviors of complex fluids. In this method, the molecular dynamics simulations are assigned to small fluid…

Soft Condensed Matter · Physics 2014-10-29 Shugo Yasuda , Ryoichi Yamamoto