rejected heat

简明释义

释放热

英英释义

例句

1.Engineers are exploring ways to utilize rejected heat 废热 from industrial processes for heating nearby facilities.

工程师正在探索利用工业过程中的废热为附近设施供热的方法。

2.In HVAC systems, rejected heat 废热 can be recycled to improve overall energy efficiency.

在暖通空调系统中，废热可以被回收以提高整体能效。

3.The power plant has a system in place to manage the rejected heat 废热 produced during electricity generation.

发电厂设有系统来管理在发电过程中产生的废热。

4.Solar thermal systems can convert rejected heat 废热 into usable energy for residential heating.

太阳能热系统可以将废热转化为可用于住宅供暖的能源。

5.The use of heat exchangers helps capture rejected heat 废热 from manufacturing equipment.

使用热交换器有助于捕获制造设备产生的废热。

作文

In the realm of thermodynamics and energy management, the term rejected heat refers to the thermal energy that is not converted into useful work during a process. This concept is crucial for understanding the efficiency of various systems, including engines, refrigerators, and industrial processes. When energy is transformed from one form to another, such as from chemical energy in fuel to mechanical energy in an engine, not all of that energy can be harnessed effectively. The portion that remains unused is often expelled into the environment as waste heat, which we categorize as rejected heat. This phenomenon is not only a technical concern but also has significant implications for environmental sustainability and energy conservation.For instance, consider a typical internal combustion engine in a car. These engines are designed to convert fuel into motion, but they are notoriously inefficient. Studies show that a substantial amount of the energy produced by burning fuel is lost as rejected heat through the exhaust and cooling systems. This inefficiency not only impacts fuel economy but also contributes to greenhouse gas emissions. Therefore, engineers are continually seeking ways to minimize rejected heat through advanced designs and technologies, such as turbocharging and hybrid systems, which aim to recover some of this lost energy.In industrial settings, the management of rejected heat can lead to significant cost savings and improved operational efficiency. Many factories generate heat as a byproduct of their processes. Instead of allowing this heat to dissipate into the atmosphere, companies can implement heat recovery systems that capture rejected heat and repurpose it for other applications, such as heating water or providing space heating. This not only reduces energy consumption but also lowers operational costs, making businesses more competitive in a market that increasingly values sustainability.Moreover, the concept of rejected heat extends beyond mechanical systems to encompass broader energy systems, including power plants. In thermal power generation, a significant amount of energy is lost as rejected heat when steam is condensed back into water after passing through the turbine. Innovative technologies, such as combined heat and power (CHP) systems, aim to maximize the use of energy by utilizing this rejected heat for district heating or industrial processes, thereby improving overall efficiency.The implications of rejected heat are not limited to economic factors; they also intersect with environmental issues. As global temperatures rise and the impacts of climate change become more pronounced, managing rejected heat efficiently is imperative. By reducing waste heat, we can lower the demand for fossil fuels and decrease carbon emissions. Strategies that focus on energy efficiency not only benefit individual organizations but also contribute to a more sustainable future for our planet.In conclusion, understanding the concept of rejected heat is essential for anyone involved in energy management or engineering. By recognizing the sources and implications of this wasted energy, we can develop more efficient systems that not only save money but also protect our environment. As we continue to innovate and improve our technologies, the challenge will be to find ways to reduce rejected heat and harness every bit of energy available to us. The pursuit of efficiency is not just a technical endeavor; it is a critical step towards a sustainable future.

在热力学和能源管理领域，术语被拒绝的热量指的是在一个过程中未能转化为有用功的热能。这个概念对于理解各种系统的效率至关重要，包括发动机、冰箱和工业过程。当能量从一种形式转变为另一种形式时，例如从燃料中的化学能转化为发动机中的机械能，并不是所有的能量都可以有效地利用。剩余的部分通常作为废热排放到环境中，我们将其归类为被拒绝的热量。这一现象不仅是技术问题，还对环境可持续性和能源节约具有重要影响。例如，考虑一辆汽车中的典型内燃机。这些发动机旨在将燃料转化为运动，但它们的效率却 notoriously 低。研究显示，燃烧燃料产生的相当大一部分能量以被拒绝的热量的形式通过排气和冷却系统损失。这种低效率不仅影响燃油经济性，还导致温室气体排放。因此，工程师们不断寻求通过先进设计和技术来最小化被拒绝的热量，例如涡轮增压和混合动力系统，旨在回收一些这部分损失的能量。在工业环境中，管理被拒绝的热量可以带来显著的成本节省和运营效率提高。许多工厂在其过程中产生热量作为副产品。公司可以实施热回收系统，捕获被拒绝的热量，并将其再利用于其他应用，如加热水或提供空间供暖，而不是让这些热量散失到大气中。这不仅减少了能源消耗，还降低了运营成本，使企业在日益重视可持续性的市场中更具竞争力。此外，被拒绝的热量的概念不仅限于机械系统，还包括更广泛的能源系统，如发电厂。在热电发电中，蒸汽在涡轮机通过后凝结回水时，会有大量的能量以被拒绝的热量的形式损失。创新技术，如联合热电（CHP）系统，旨在通过利用这些被拒绝的热量用于区域供热或工业过程，从而最大化能源的使用，提高整体效率。被拒绝的热量的影响不仅限于经济因素；它们还与环境问题交织在一起。随着全球气温上升和气候变化影响的日益明显，有效管理被拒绝的热量变得至关重要。通过减少废热，我们可以降低对化石燃料的需求，减少碳排放。专注于能源效率的策略不仅使个体组织受益，还有助于我们星球的可持续未来。总之，理解被拒绝的热量的概念对于任何参与能源管理或工程的人来说都是至关重要的。通过认识到这一浪费能量的来源和影响，我们可以开发出更高效的系统，不仅节省资金，而且保护我们的环境。随着我们不断创新和改善我们的技术，挑战将是找到减少被拒绝的热量和利用我们可用的每一分能量的方法。追求效率不仅是技术上的努力；它是迈向可持续未来的重要一步。