- CondenSyn/CondenSyn MINI的性能相當於使用自來水的Leibig型冷凝器。
- 沒有漏水和潛在氾濫的問題
- 以不使用水來減少對環境的影響和用水的成本
- 清晰可見的回流和易於清潔的設置
- 適合在真空下使用
- 每個CondenSyn/CondenSyn MINI空氣冷凝器都是在英國單獨手工製作
- CondenSyn/CondenSyn MINI的設計提供了適合的配件來整合到多個系統和應用程序中
- CondenSyn不會因為成本比其他可用的系統來的少而讓您失望！
- 獨特的Asynt CondenSyn概念受到歐洲聯盟註冊設計的保護
如表所示，Asynt CondenSyn MINI無水空氣冷凝器透過標準的瓶頸連接到圓底燒瓶。
Condensyn MINI長度僅有20cm且配備了B14轉接器，不但不需要冷卻水就可以運行，同時還提供了與Liebig水冷凝器相同的蒸汽冷凝性能。雖然利用循環水冷卻的冷凝器是有效的，但它們對自來水的持續需求還是會產生環境和成本的問題。
一所領先的英國大學進行了具有B19磨砂玻璃接頭且基本有效長度為200mL的CondenSy、帶有約25mL溶劑的100mL二頸圓底燒瓶以及內部溫度計的獨立測試，來評估研究和教學實驗室的安全使用性能。
|
溶劑 |
DCM |
丙酮 |
四氫呋喃 |
IMS |
乙腈 |
水 |
甲苯 |
|
Bp [°c] |
40 |
56 |
66 |
~78 |
82 |
100 |
110 |
|
DrySyn探測[°c] |
60 |
80 |
90 |
100 |
100 |
120 |
140 |
|
內部溫度 [°c] |
41 |
59 |
66 |
80 |
82 |
100 |
110 |
|
區別 [°c] |
21 |
21 |
24 |
20 |
18 |
20 |
30 |
|
時間 [分鐘] |
240 |
240 |
250 |
240 |
240 |
240 |
240 |
|
%-損失 [總共] |
3.4% |
2.2% |
1.9% |
0.16% |
0.64% |
0.1% |
0.34% |
|
%-損失 [小時] |
0.85% |
0.55% |
0.48% |
0.04% |
0.16% |
0.025% |
0.08% |
在這些測試中，稱過重的內容物在規定溫度下攪拌一定的時間來測試內容物在冷卻至室溫後，會耗損多少溶劑。
在教學過程中，溫度會被設置為高於研究實驗室所建議的數值，因為學生通常會將加熱元件的溫度設置得高過於溶劑/反應混合物在快速加熱和劇烈沸騰時所需的溫度。
*測量得到的較高水損失是由於其高表面張力導致水滴黏在冷凝器的內部，而不是像其他溶劑那樣全部流回RBF。**建議在使用沸點低於 60°C的溶劑時，將溫差保持在10°C以下來防止發生穿透。而在使用乙醚時，溫度不應超過4°C。
- 甲基化酒精（變性乙醇）。
- 整個裝置（含溶劑）在規定加熱的時間前後來稱重並且按質量做計算，而耗損值則是以初始重量的%計算。
節約金錢和用水
冷凝器的平均用水量為每分鐘2L；該比例已被英國一家主要研究機構確認為其設施中每個冷凝器的平均測量使用量。下表使用的水費是每立方米*1.22英鎊，相較之下每立方米浪費1.56英鎊，相當於每升0.28便士**，一年下來可為您節省不少金錢。
|
|
一天5小時 |
一天24小時 |
|
一天用水量 |
600公升 |
2880公升 |
|
一天花費 |
1.68英鎊 |
8.06英鎊 |
|
一個月花費(工作天) |
33.60英鎊 |
161.20英鎊 |
|
一年花費(工作天) |
403.20英鎊 |
1,934.40英鎊 |
*此商業費率成本來自英國的供水商 Anglian Water 於 2020 年 3 月。
- Performance of the CondenSyn/CondenSyn MINI is equivalent to a Leibig type condenser being used with tap water.
- No issues with water leakage, and potential flooding
- By not using water the environmental impact is reduced as is the costs of water usage.
- A tidy setup, clear visibility of reflux and easy to clean
- Suitable for use under vacuum
- Each CondenSyn/CondenSyn MINI air condenser is individually handmade in the UK
- CondenSyn/CondenSyn MINI is designed to integrate into multiple systems and applications, with fittings to suit.
- The CondenSyn system is considerably less costly than other available systems, but don’t let that put you off!
- The unique Asynt CondenSyn concept is protected by European Community Registered Designs.
The Asynt CondenSyn MINI waterless air condenser shown connects via a standard neck to a round bottom flask.
Just 20 cm long and fitted with a B14 adapter – the Condensyn MINI provides comparable vapour condensing performance to a Liebig water condenser but advantageously requires no cooling water for operation. While condensers cooled by a circulating water are effective, their constant need for running tap water creates environmental and cost issues.
Independent tests were performed by a leading UK University to evaluate the performance for safe use in their research and teaching laboratories. Evaluations were based upon a basic 200 mm effective length CondenSyn with B19 ground glass joint, a 100ml 2-neck round bottom flask with ~25 mL of solvent along with an internal thermometer.
In these tests the weighed contents were stirred at the given temperature for the stated time to test the loss of solvent, i.e. how much solvent would be lost once the contents have cooled to room temperature.
In a teaching environment the temperature of the heating element is often set higher by students than necessary to ensure a fast heating and vigorous, i.e. clearly visible, boiling of the solvent / reaction mixture. Thus, the temperatures were set to higher values than recommended in research labs for e.g. stills.
*The higher loss of water measured is due to its high surface tension that resulted in droplets of water sticking to the inside of the entire length of the condenser, rather than all running back to the RBF as was observed for all other solvents. **It is recommended that to prevent breakthrough when using solvents below 60 oC boiling point that a temperature differential is kept below 10 oC. With Diethyl Ether then this should be no more than 4 oC.
1 Industrial Methylate Spirits (denatured ethanol).
2 This was calculated by mass. The entire apparatus (with solvent) was weighed before and after heating for the stated time, and the loss calculated as a % of the initial weight.
Saving money and water:
The average rate of water used in a condenser is 2 litres per minute; this rate was confirmed by a major UK research institution as the average measured use per water condenser in their facility. The water costs used below are at £1.22 per cubic metre supply and £1.56 per cubic metre waste which is equivalent to 0.28p per litre. This commercial rate cost is from a water supplier here in the UK, Anglian Water in March 2020.
Every CondenSyn is individually handmade in the UK.