themroc
Chemical
- Sep 7, 2006
- 76
We are in the process of setting up a small test rig to meassure tube side pressure drop in gas flows in tubes with internals.
The test tube internal diameter is about 46mm. Before the gas passes this tube it passes annother tube with 16mm internal diameter where the massflow is meassured.
Now my Question, we aim for tube side flow rates of about 120000 l/hr aiming for a Reynolds number >50000.
We started using a blower type, which is e.g. used in the garden to blow leaves. The design flowrate was 220000l/hr (3kW) but when connected to the measurement tube the flow dropped to 70000 l/hr.
We then used a vacuum cleaner (2kW) succing the air through and we achived a similar flow rate. We than thought blowing on one side and succing on the other but the result was disapointing we got only slightly higher values (about 73000l/hr).
Idealy we would prefer the vacuum option. Is their annother device which delivers high flow rates in succing mode? Or does anyone has an idea why our flow rate is limited and how we could overcome this limitation?
The test tube internal diameter is about 46mm. Before the gas passes this tube it passes annother tube with 16mm internal diameter where the massflow is meassured.
Now my Question, we aim for tube side flow rates of about 120000 l/hr aiming for a Reynolds number >50000.
We started using a blower type, which is e.g. used in the garden to blow leaves. The design flowrate was 220000l/hr (3kW) but when connected to the measurement tube the flow dropped to 70000 l/hr.
We then used a vacuum cleaner (2kW) succing the air through and we achived a similar flow rate. We than thought blowing on one side and succing on the other but the result was disapointing we got only slightly higher values (about 73000l/hr).
Idealy we would prefer the vacuum option. Is their annother device which delivers high flow rates in succing mode? Or does anyone has an idea why our flow rate is limited and how we could overcome this limitation?
