In recent years, solar-powered photocatalytic water splitting for hydrogen production has drawn great attention as a method to supply clean energy and reduce environmental pollution. This approach, driven by solar energy to synthesize hydrogen gas, is completely renewable and can be used to power hydrogen fuel cells to effectively solve the global…

A significant amount of energy in the form of heat is lost in industrial processes once it is used in specific processes. Among different technologies, high-temperature heat pumps (HTHP) are a valuable method of recovering low-temperature waste heat in the industry in a very efficient way that can be activated using clean electricity. As a…

The continued and substantial increase in technological resources generates a new concept of education that utilizes online resources -- blended learning. Blended learning represents a combination of face-to-face experiences and online learning experiences. The advantage of this multiple-method approach is that it offers the opportunity to achieve…

In the New England region, where temperatures range from below 0 to over 100 degrees, heating and cooling can present a major opportunity to improve sustainability statistics of a campus. Overt changes such as improving windows come to mind, but recent advancements in boiler technology and strategies for working with the heat of the sun and the…

The development of nations depends on energy consumption, which is generally based on fossil fuels. This dependency produces irreversible and dramatic effects on the environment, e.g. large greenhouse gas emissions, which in turn cause global warming and climate changes, responsible for the rise of the sea level, floods, and other extreme weather…

Facility managers everywhere are tasked with improving energy efficiency to control costs. Those strides cannot be achieved at the expense of system performance and reliability, or the comfort of the people within those properties. There are few places where this is truer than in schools and universities. K-12 schools and university lecture spaces…

This case study of the University of Toronto Sustainability Office's energy conservation project, Rewire, explores the implementation of a social marketing campaign that encourages energy efficient behavior. Energy conservation activities have reached approximately 3,000 students and staff members annually, and have saved electricity, thermal…

The scientific method is arguably the most reliable way to understand the physical world, yet this aspect of science is rarely addressed in introductory science courses. Students typically learn about the theory in its final, refined form, and seldom experience the experiment-to-theory cycle that goes into producing the theory. One exception to…

Nearly 50 years ago, Henry Bent published his groundbreaking article in this "Journal" introducing the "global" formulation of thermodynamics. In the following years, the global formulation was elaborated by Bent and by one of the present authors. The global formulation of the first law focuses on conservation of energy and the recognition that…

When the subject of buildings and daylighting arises, most people's thoughts will turn first to windows. To the uninitiated, it seems a simple formula: more windows, more daylight; fewer windows, less daylight. But designers know that effective use of daylighting in a building design involves more than just letting in light to otherwise darkened…

We study some mechanical problems in which a friction force is acting on a system. Using the fundamental concepts of state, time evolution and energy conservation, we explain how to extend Newtonian mechanics to thermodynamics. We arrive at the two laws of thermodynamics and then apply them to investigate the time evolution and heat transfer of…

Consumers are constantly being presented with choices that have economic, environmental, and lifestyle/social dimensions. For example, is an energy-efficient hybrid car (with regenerative braking) a better choice than a regular petroleum-only vehicle when considered from all three dimensions? Surprisingly, although each and all of these dimensions…

While a number of excellent campus climate planning resources are available, this guide attempts to fill a gap by providing an abundance of "how-to" information. The goal of the guide is to assist climate action planning teams at schools that are well versed in campus climate issues and well along in the CAP (Climate Action Planning) process as…