Answer / karthick

1.high alkalinity causes scale formation on the walls of
the heating surface so it reduces the heat transfer from
the surface to water.
2.the ph value is very difficult to be adjusted
3.eye and skin irritation
4.it affects the feed water treatment by poor filtration of
water

Answer / chanakyapitti

PH of water will indicate the characteristic of water. Normal water has ph value 7, weather it will decrease the water change as acid.If it will raise above 7 the water will change as base. Further raising of ph above 10.2 it will leads the caustic embitterment. This will form in inner surface of boiler tubes as scale which was heat resident. Due this scale the heat transfer rate will be decreased by increasing the layer thickness in the tube. Overheating of tube will occur. because of overheating tube will be damaged. so that boiler water PH should be with in limits between 9.6-10.5

respected sir/madam.. i wish to know about the latest mechanical inventions and improvements... hwere can i get them... please respond to me through my id

0 Answers  

---

i am B.E mechanical enginner and i am appearing exam OF mahagenco for the post junior engineer.can get previous exam paper for mahagenco for B.E mechanical engineer .I ALSO WANT STUDY MATERIAL FOR EXAM.

1 Answers  

---

what is your expectation

0 Answers   TIPL,

---

1.Difference between enthalpy & entropy?

3 Answers   Covanta Energy, TATA,

---

Why air is not used to run the turbine?

0 Answers  

---

What are the lubricating system of an IC engine?

9 Answers  

---

plz send me the aptitude test paper for hpcl.

0 Answers  

---

impact strength of an material is an index of its---?

1 Answers   AML, RRB,

---

why condensate pump can be used instead of feed pump?

1 Answers  

---

what is the velocity considering in lube oil drain line for lube of system for steam turbine?

0 Answers   EEPL,

---

What is difference between Pipe and Tube?

14 Answers   Crest, TATA,

---

What is iiucr in relation to petrol engine ?

0 Answers  

---