A boombox is a piece of audio equipment capable of playing music at high volumes with superior sound quality. In its simplest form, it comprises loudspeakers, cassettes and/or CD players along with a USB port. Designed for portability, this device could be powered by both line current and batteries. The growth and evolution of boomboxes was driven by a desire for louder and heavier bass music. This led to the development of a few significantly heavy and big boomboxes during the late 90s, which required “D” size batteries sometimes up to 10 or more per box while being operated via battery.

Hand blenders, also called immersion blenders or stick blenders, are considered to be important kitchen tools. A hand blender has a mixing head with rotating blades that are immersed in a container while blending. Standard blenders have two blades and use a bowl to blend automatically. The Global Hand Blender market is expected to grow at a CAGR of 7.20 percent and 6.05 percent in terms of revenue and unit shipment, respectively, during the period 2015-2019. The market is mature in the Americas and Europe, but is at a nascent stage in the APAC region and the MEA. The Hand Blender market in the APAC region is expected to grow at a significant rate during the forecast period because of the growing popularity of hand blenders.

为获得不同工质对新型双工质-闪蒸-双工质联合循环系统热力性能的影响规律及确定系统最佳工质，以流量27.8 kg/s，383.15 K的饱和蒸汽为热源，针对5种低沸点有机工质，以热力学第一、二定律为基础，编制计算程序，将不同工质对该联合循环系统热力性能的影响进行了对比分析。研究结果表明：在具有潜热的高压级双工质阶段，采用不同工质系统净输出功和热效率随蒸发压力增加均呈现出逐渐增加，增幅减小的趋势，热力性能表现为R600＞R236fa＞R 114＞R245 fa＞R 123；对于不同温度热水热源，净输出功则表现出随蒸发压力的提高先增加后减小的特点，在汽轮机背压一定时，工质的沸点越低，其热力性能越好，热力性能表现为R236fa＞R600＞R 114＞R245 fa＞ R123：在高压级、低压级双工质阶段分别采用R600，R236fa作为工质时，该联合循环系统取得最大净输出功6466.1 kW、最大热效率9.46％和最小火用损失9511.5kW。

不同工况下空冷凝汽器的换热性能，是火电直接空冷机组设计、优化和运行的主要依据。针对实际运行的1000 MW超超临界直接空冷机组，对其凝汽器进行了夏季、冬季和秋季工况的试验研究。试验获得了夏季和冬季工况下凝汽器翅片管束迎面风速的分布和壁面温度的分布，发现翅片管束迎面风速分布从上至下逐渐增高，而管束壁面温度分布对于顺流单元从上至下逐渐降低，对于逆流单元从上至下逐渐增高；获得了顺流翅片管束的易结冻区域；获得了秋季工况下l 000 MW空冷机组空冷凝汽器空气侧努赛尔数和雷诺数之间的无量纲关联式。

燃气轮机的进气滤网可以有效过滤掉大部分颗粒污染物，降低压气机的性能恶化速率。同时，随着运行时间的延长，滤网的压差会越来越大，将会降低燃气轮机的效率和功率。基于滤网全生命周期内单位发电量更换成本最小的原则，提出了一种计算最佳更换周期的新方法。对某联合循环燃气轮机发电机组的计算表明，最佳更换周期约为6800h。与该电厂实际执行的更换周期(3300h)相比，全厂(6套联合循环机组)每年节约成本135万元。最后，分析、计算了初始成本、燃料价格和上网电价等因素对最佳更换周期的影响；所得结论对其他联合循环机组的进气滤网更换周期优化决策具有借鉴作用和重要的指导意义。

基于声波和相变耦合强化细颗粒长大机制，建立了声波与蒸汽相变联合作用下细颗粒物长大脱除的实验装置，并对细颗粒在不同外加条件下的脱除特性进行实验研究，探讨不同操作条件对细颗粒脱除效率的影响。结果表明：在2 000 Hz和150 dB的声波单独作用下，细颗粒的分级脱除效率较低在10％～23％左右；在过饱和度S=1.2的蒸汽环境中，细颗粒的分级脱除效率略高于声波单独作用的脱除效率；在声波和蒸汽相变联合作用下，细颗粒的分级脱除效率均得到大幅提高，分级脱除效率达到了53％～80％。相变单独作用时，在过饱和度较低时，细颗粒无凝结长大，因此脱除效率很低，脱除效率几乎不随过饱和度的增大而改变，但当过饱和度增到1.0后，细颗粒的脱除效率则随过饱和度的提高而迅速增大。在声波与相变联合作用下，细颗粒的脱除效率随过饱和度的增大而增加，当过饱和度增大到一定程度时，脱除效率出现大幅的提高，过饱和度从1.0增大到1.2，脱除效率从40％左右提高到80％。实验结果表明声波与相变联合作用可有效提高燃煤细颗粒的脱除效果。