本次调查的主要目的是扩展ASHRAE 745-RP 1999年2月9日最终报告（Gerstler 1999）中记录的常用商用厨房用具和食品的颗粒物和可冷凝蒸汽排放数据。与之前的研究一样，为每个设备选择合适的食品，以提供显著的油脂排放，并符合相应的ASTM测试协议要求。本研究中使用了主要的颗粒取样仪器，个人级联冲击器和相同的油脂蒸汽取样仪器，EPA方法5，因此可以将结果与ASHRAE 745-RP中获得的结果进行直接比较。第二个目标是开发EPA方法5的替代品，以量化烹饪废水中的可冷凝油脂部分。 方法5的局限性包括需要烹调大量食物，以获得可靠的统计显著质量量。另一个缺点是完全蒸发溶剂所需的时间，通常需要几天，然后才能进行重量测量。因此，直到几天后才能完全确定测试的成功或失败。目前的团队已经对另一种方法进行了一些初步研究，该方法使用振动晶体来检测微小的沉积质量。该方法已成功用于测定气溶胶质量浓度。通过冷却晶体并撞击充满蒸汽的气流，预计该技术可用于基本实时测量可冷凝蒸汽浓度，其精度比方法5配置高得多。 该装置的原型与方法5系统并行构建和运行，以确定使用该替代方法的可行性。单位:双

The main goal of this investigation is to extend the data on particulate and condensable vapor emissions from commonly used commercial kitchen appliances and food products that were previously documented in the ASHRAE 745-RP final report dated February 9, 1999 (Gerstler 1999). As with the previous study, appropriate food products were selected for each appliance to provide significant grease emissions and to be in accordance with corresponding ASTM test protocol requirements. The main particle sampling instrument, the personal cascade impactor, and the same grease vapor sampling instrument, the EPA Method 5 were used in this study so the results could be directly compared with the results obtained in ASHRAE 745-RP.A second objective is to develop an alternative to EPA Method 5 to quantify the condensable grease portion of cooking effluent. Limitations to Method 5 include the necessity to cook large amounts of food to obtain reliable statistically significant mass amounts for some appliances. Another drawback is the time required to completely evaporate the solvent, typically several days, before the weight measurement can be made. Thus the success or failure of a test cannot be completely determined until several days afterwards. The present team had performed some preliminary work on an alternative method that used a vibrating crystal to detect minute amounts of deposited mass. This approach has been used successfully to determine aerosol mass concentration. By cooling the crystal and impinging a vapor-laden air stream, it was predicted that this technology could be used to measure condensable vapor concentration in essentially real time and with much better precision than the Method 5 configuration. A prototype of this device was constructed and operated in parallel with the method 5 system to determine the feasibility of using this alternative approach.Units: Dual