This report describes the riso project, a system for uniied prediction and diagnosis in HVAC systems based on a class of probabilistic models called belief networks. Progress has been made in both theoretical and practical problems: a scheme for the representation of belief networks with heterogeneous conditional distributions has been devised, an algorithm for inference in a polytree network w...

More active participation of the demand side and efficient integration of distributed energy resources (DERs) such as electric vehicles (trVs), energy storage (ES), and renewable energy sources (RESs) into the existing power systems are important design objectives of the future smart grid. In general, effective demand side management (DSM) would benefit both system operators (e.g., peak demand ...

Improving the control strategy of building HVAC (heating, ventilation, and air-conditioning) systems can lead to significant energy savings while preserving human comfort requirements. This paper formulates the optimization problem to obtain the setpoints of control variables with the lowest HVAC system energy consumption. The optimization problem is nonlinear, strongly coupled, and has both di...

Carnegie Mellon University {jgluck, ckoehler, jmankoff, anind, yuvraj.agarwal}@andrew.cmu.edu ABSTRACT Heating, Ventilation, and Cooling (HVAC) systems are often the most significant contributor to the energy usage, and the operational cost, of large office buildings. Therefore, to understand the various factors affecting the energy usage, and to optimize the operational efficiency of building ...

Life cycle assessment is applied to assess the environmental benefits and trade-offs of a solar-assisted heating, ventilating, and air-conditioning (HVAC) system installed in the CIESOL building in Almeria (southeastern Spain). The environmental performance of this system is compared to that of a conventional HVAC system using a heat pump. The study evaluates these systems from cradle to grave,...

Persistent monitoring of Indoor Air Quality (IAQ) within and around buildings and structures is critical to reduce risk of indoor health concerns. Specifically, IAQ issues in large integrated buildings may stem from inadequate ventilation and/or faults in the complex HVAC systems that together with control and communication systems can be considered as complex Cyber Physical Systems (CPSs). We ...

The topic of sustainability is high importance today. Global efforts such as the Montreal Protocol (1987) and Kigali Amendment (2016) are examples joint work by countries to reduce environmental impacts improve level ozone layer, choice refrigerants air conditioning systems, which essential for this purpose. But what indicators be used measure something so necessary? In article, types GWP (Glob...

This paper investigates the accelerated distributed model predictive control (MPC) strategy for heating, ventilation and air conditioning (HVAC) systems with local global power input constraints. The problems are firstly formulated in MPC framework then constrained optimization is converted into a quadratic programming problem. In problem formulation, thermal couplings between immediate neighbo...